Japanese Transports

ZATSUYOSEN!

(DAIGEN MARU No. 7 MARU prewar)

IJN DAIGEN MARU No. 7:
Tabular Record of Movement

© 2014-2017 Gilbert Casse, Bob Hackett and Peter Cundall
Revision 1

April 1937:
Osaka. Laid down by Namura Zosensho K.K. shipyard for Namura Kisen G.K. as a 1,289-ton cargo ship.
August 1937:
Launched and named DAIGEN MARU No. 7.
8 November 1937:
Completed and registered in Hamadera, Osaka Prefecture.
9 November 1938:
Requisitioned by the IJN.
18 November 1938:
Registered in the IJN as an auxiliary gunboat attached to the Sasebo Naval District under instruction No. 967. Naval Reserve Lt Egashira Tomiya is appointed CO.
20 November 1938:
Assigned to the 5th Gunboat Division under instruction No. 970.
25 November 1938:
Departs Sasebo and arrives back the same day.
30 November 1938:
Departs Sasebo.
E 2 December 1938:
Arrives at Nanking, China.
15 December 1938:
Assigned to 3rd Fleet, 5th Gunboat Division, 1st Base Force.
16 December 1938:
Comes alongside auxiliary gunboat NANKAI MARU No. 1.
18 December 1938:
Separates from auxiliary gunboat NANKAI MARU No. 1.
December 1938:
Departs Nanking.
23 December 1938:
Arrives at Mao Shan. Departs there and arrives later at Wuhu, Yangtze River.
3 January 1939:
Departs Wuhu.
E 4 January 1939:
Arrives at Nanking.
21 January 1939:
Comes alongside auxiliary gunboat NANKAI MARU No. 1 at Ataka pier.
27 January 1939:
Separates from auxiliary gunboat NANKAI MARU No. 1.
12 February 1939:
Comes alongside auxiliary gunboat NANKAI MARU No. 1 at Ataka pier.
14 February 1939:
Departs Nanking.
E 15 February 1939:
Arrives at Wuhu.
16 February 1939:
Departs Wuhu.
E 17 February 1939:
Arrives at Nanking.
14 March 1939:
Comes alongside auxiliary gunboat NANKAI MARU No. 1 at Ataka pier.
17 March 1939:
Separates from auxiliary gunboat NANKAI MARU No. 1.
March 1939:
Departs Nanking.
28 March 1939:
Arrives at Anqing, Yangtze River.
30 March 1939:
Departs Anqing.
E 1 April 1939:
Arrives at Wuhu.
6 April 1939:
Comes alongside auxiliary gunboat NANKAI MARU No. 1 at Navy pier.
8 April 1939:
Separates from auxiliary gunboat NANKAI MARU No. 1.
April 1939:
Departs Wuhu and arrives later at Nanking. Rated as auxiliary gunboat No. 51.
20 April 1939:
Departs Nanking.
April 1939:
Arrives at Nanking.
29 April 1939:
Comes alongside auxiliary gunboat NANKAI MARU No. 1 at Ataka pier.
1 May 1939:
Separates from auxiliary gunboat NANKAI MARU No. 1.
15 May 1939:
Comes alongside auxiliary gunboat NANKAI MARU No. 1 at Ataka pier.
16 May 1939:
Separates from auxiliary gunboat NANKAI MARU No. 1.
May 1939:
Departs Nanking.
1 June 1939:
Naval Reserve Lt Abe Takeo is appointed CO.
5 June 1939:
Arrives at Nanking.
4 July 1939:
Departs Nanking.
18 August 1939:
Arrives at Nanking and comes alongside Gunboat HOZU.
August 1939:
Departs Nanking.
28 August 1939:
Arrives at Nanking.
31 August 1939:
Departs Nanking.
9 September 1939:
Arrives at Itu Aba Island (now Taiping Island), Spratly Islands.
10 September 1939:
Departs Itu Aba.
13 September 1939:
Arrives at Nanking.
15 November 1939:
Assigned to the 15th Gunboat Division under Navy instruction No. 850.
E November 1939:
Departs Nanking.
9 December 1939:
Arrives at Jingkow (now Zhenjiang).
10 December 1939:
Departs Jingkow. Arrives later at Nanking.
14 December 1939:
Departs Nanking.
21 December 1939:
Arrives off Wuhu. Comes alongside auxiliary destroyer tender NIPPONKAI MARU.
22 December 1939:
Tethers to rotating anchor.
15 November 1940:
Attached to the Kure Naval District under Navy instruction No. 830. Assigned that same day to the 14th Gunboat Division under Navy instruction No. 837.
15 October 1941:
Assigned to Vice Admiral Makita Kakusaburo’s (38) Shanghai Special Base Force in Captain (later Rear Admiral) Ohashi Tatsuo’s (40) 14th Gunboat Division also consisting of auxiliary gunboats TOSHO MARU, NISSHO MARU No. 2 and SHINKO MARU No. 1 GO, under Navy instruction No. 1250.
October 1941:
Rated as auxiliary gunboat No. 1 in the 14th Gunboat Division.
1 December 1941:
Naval Reserve Lt Abe Takeo is confirmed CO. Currently assigned to Shanghai Special Base Force, 7th Warning Corps, 14th Gunboat Division.
2 December 1941:
Departs Shipu. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
3 December 1941:
Arrives at Wusong, Shanghai entrance. Departs there and arrives at Shanghai, tethering at Coal pier. Loads coal and boiler water. Departs there and tethers to Buoy No. 6 later that same day.
4 December 1941:
Loads fresh food and canteen goods.
5 December 1941:
Departs Shanghai.
6 December 1941:
Arrives at Shipu. Departs there and calls at Yuet Ching Bay. Departs there later that day.
8 December 1941:
At 0520, sights British cargo ship MARY MOLLER (later KAIKO MARU). At 0620, a boarding party comes aboard that ship. At 0720, ship is instructed to resume her course. At 1220, MARY MOLLER is seized and her crew captured at Qiqu Liedao Island. At 1420, they are transferred to DAIGEN MARU No. 7.
Currently assigned to Shanghai Special Base Force, 8th Warning Corps, 14th Gunboat Division under Navy’s telegram No. 153. On patrol duties about 100 nautical miles S of Hong Kong.
Departs later that day Qiqu Liedao Island on patrol duties.
9 December 1941:
Arrives at Qiqu Liedao Island. Departs there later in the day escorting MARY MOLLER.
10 December 1941:
Arrives at Taichow Islands and hands over MARY MOLLER to auxiliary gunboat SHINKO MARU No. 1 GO.
11 December 1941:
Comes alongside and loads boiler water from auxiliary oiler KORYU (974 GRT) MARU.
12 December 1941:
Loads fresh food. Departs Taichow Islands and arrives at Shipu later that day.
13 December 1941:
Departs Shipu and arrives at Heiniu Bay.
14 December 1941:
Departs Heiniu Bay and arrives at Daiyu Shan later in the day.
15 December 1941:
Departs Daiyu Shan.
16 December 1941:
Departs Qiqu Liedao Island. At 0800, escorts IJA transport SURABAYA MARU to other islands near Taichow. At 1500, escorts ends near Bei Ji Shan Archipelago. Arrives at Yuet Ching Bay later that day.
17 December 1941:
Comes alongside and loads boiler water from auxiliary transport HOKUAN MARU. Departs Yuet Ching Bay later that day.
18 December 1941:
Arrives at Shipu. Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22 and grain products from cargo ship KATSUYAMA MARU. Departs there and arrives at Fu Du Waterways later that day.
19 December 1941:
Departs Fu Du Waterways and arrives at Dinghai later that same day. Loads coal from lighter BANKI MARU and fresh food from lighter CHIKATSU MARU
20 December 1941:
Loads coal from lighter BANKI MARU.
22 December 1941:
Departs Dinghai and calls at Shipu. Departs there later in the day.
23 December 1941:
Arrives at Yuet Ching Bay.
24 December 1941:
Departs Yuet Ching Bay. At 1710 near Yu Shan, meets up with and escorts cargo ship KAIYO MARU and IJA transports MIKASA and TATEYAMA MARUs.
25 December 1941:
At 0940, ends convoy escort.
26 December 1941:
Arrives at Shipu. Supplied with fresh water by IJA transport DAINICHI MARU and by lighter TOYOKUNI MARU.
28 December 1941:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
29 December 1941:
Departs Shipu on gunnery drill and arrives at Taichow Islands later that day.
30 December 1941:
Departs Taichow Islands and arrives at Heiniu Bay later that same day.
2 january 1942:
Departs Heiniu Bay on escort convoy duties and arrives at Taichow Islands later in the day.
3 January 1942:
Departs Taichow Islands.
4 January 1942:
Arrives at Dinghai. Loads coal. Later that day, comes alongside and loads fresh food from lighter SENSHO MARU and canteen goods from cargo ship KATSUYAMA MARU.
5 January 1942:
Departs Dinghai. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 16 and arrives at Shipu later in the day.
6 January 1942:
Departs Shipu and arrives at Taichow Islands later that day.
7 January 1942:
Comes alongside and loads boiler water from auxiliary oiler KORYU (974 GRT) MARU.
8 January 1942:
Departs Taichow Islands and arrives at Yuet Ching Bay later in the day.
10 January 1942:
Departs Yuet Ching Bay on convoy escort duties and arrives at Taichow Islands later that day.
12 January 1942:
Departs Taichow Islands and arrives at Shipu later in the day.
13 January 1942:
Departs Shipu.
14 January 1942:
Arrives at Wusong. Departs there and arrives at Jiangnan later that same day.
15 January 1942:
Loads canteen goods and quartermaster items.
16 January 1942:
Loads fresh food and grain products.
19 January 1942:
Departs Jiangnan and arrives at Shanghai, tethering at Coal pier. Loads coal and departs Shanghai later in the day.
20 January 1942:
Arrives at Shipu.
21 January 1942:
Departs Shipu searching for a ship in distress.
22 January 1942:
At 28N, 122-30E end searching with no sign of ship in distress.
23 January 1942:
Arrives at Taichow Islands. Comes alongside auxiliary storeship KOSOKU MARU No. 3 and loads fresh food.
24 January 1942:
Departs Taichow Islands on patrol duties and arrives back later that day.
25 January 1942:
Comes alongside and loads boiler water from auxiliary oiler KORYU (974 GRT) MARU.
26 January 1942:
Departs Taichow Islands and arrives at Niubi Shan Strait.
27 January 1942:
Departs Niubi Shan Strait and arrives at Ssu Chiao Shan (now Sijiao Island), Shengsi Archipelago.
28 January 1942:
Departs Ssu Chiao Shan. At 1000 about six nautical miles WNW Hua Niao Shan, joins an 8 ship convoy heading south escorted by destroyer HASU and cargo ship KOFUKU MARU. At 2300, one of the ships, IJA transport NICHIREN MARU suffers engine problems. At 2350, ends the convoy’s escort and monitors NICHIREN MARU.
29 January 1942:
Cargo ship FUYO MARU tows IJA transport NICHIREN MARU towards Jiu Shan Islands. Arrives there later that day.
30 January 1942:
Departs Jiu Shan Islands on patrol duties and arrives back there later in the day.
31 January 1942:
Departs Jiu Shan Islands escorting IJA transport NICHIREN MARU.
1 February 1942:
At 1000, E of Dong Ting Lake, Yangtze River, ends the escort of IJA transport NICHIREN MARU and arrives at Shipu later that day. Inspects three junks.
2 February 1942:
Departs Shipu and arrives at Dinghai. Comes alongside auxiliary storeship KOSOKU MARU No. 3 and loads fresh food.
2 ~ 3 February 1942:
Loads coal.
4 February 1942:
Departs Dinghai in convoy escorting captured British cargo ship ARGUS (later renamed SHINNAN MARU) and Norwegian salvage/tug HALLDOR (later renamed HARUTA MARU). The convoy arrives at Shipu later in the day. Water supplied by lighters BANKI MARU and TOYOKUNI MARU.
5 February 1942:
Comes alongside and loads fresh water, lubricating oil, canteen goods and troop shirts from cargo ship KATSUYAMA MARU.
6 February 1942:
Departs Shipu and arrives at Yuet Ching Bay later that day.
7 February 1942:
Departs Yuet Ching Bay and arrives at Heiniu Bay later that same day.
8 February 1942:
Departs Yuet Ching Bay and arrives at Heiniu Bay later that same day.
9 February 1942:
At 0940, boarding party starts junk inspection duties. At 1300, boarding party returns to mother ship. Comes alongside and loads boiler water from auxiliary oiler KORYU (974 GRT) MARU. Departs Heiniu Bay on patrol duties and at 2200, heads towards lighter ANBA MARU on rescue mission.
11 February 1942:
Ends rescue mission with no sign of ANBA MARU and arrives at Yuet Ching Bay later that day. Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
12 February 1942:
Departs Yuet Ching Bay and arrives at Heiniu Bay later that same day.
13 February 1942:
Departs Heiniu Bay and arrives at Taichow Islands later in the day. Comes alongside auxiliary storeship KOSOKU MARU No. 3 and loads fresh food.
15 February 1942:
Departs Taichow Islands and arrives at Niubi Shan Waterways later that day.
16 February 1942:
Departs Niubi Shan Waterways and arrives at Dinghai later that same day. Comes alongside auxiliary storeship KOSOKU MARU No. 3 and loads fresh food. Fresh water supplied by lighters HEISHICHI and TOYOKUNI MARUs.
16 ~ 17 February 1942:
Loads coal.
18 February 1942:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
19 February 1942:
Departs Dinghai and arrives at Taichow Islands later in the day. Supplies salvage drums and wood to auxiliary gunboat NISSHO MARU No. 12.
20 February 1942:
Departs Taichow Islands on patrol duties and arrives back there later that day.
22 February 1942:
Departs Taichow Islands and arrives at Heiniu Bay later in the day.
24 February 1942:
Comes alongside and loads fresh water and troop shirts from IJN shared tanker (B/C-AO) TAKATORI MARU No. 1. Departs Heiniu Bay and arrives at Sha Harbor later that day.
25 February 1942:
Departs Sha Harbor and calls at Dayu Shan. Departs there and arrives at Nanji Shan later that day.
26 February 1942:
Departs Nanji Shan and arrives at Taichow Islands. Comes alongside and loads fresh food from auxiliary storeship KOSOKU MARU No. 3.
27 February 1942:
Comes alongside and loads boiler water from auxiliary oiler KORYU (974 GRT) MARU. Departs Taichow Islands towing lighters KURE MARU No. 2 and TOYOHAMA MARU.
28 February 1942:
Arrives at Shipu.
2 March 1942:
Departs Shipu and arrives at Fu Du Waterways later that day.
3 March 1942:
Departs Fu Du Waterways and arrives at Dinghai later that same day. Loads coal. Fresh water supplied by lighters HEISHICHI and TOYOKUNI MARUs.
4 March 1942:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
5 March 1942:
Departs Dinghai and arrives at Shipu later that day.
6 March 1942:
Departs Shipu and arrives at Taichow Islands later that same day.
7 March 1942:
Departs Taichow Islands and arrives at Le Chingao later in the day. At 2050, lands a SNLF rescue party searching for a crashed Army aircraft.
8 March 1942:
At 0010, SNLF rescue party boards the ship. At 0520, they are landed again and searching is resumed. At 0730, plane wreck is discovered. At 1200, SNLF rescue party embarks. Departs Le Chingao and arrives at Qiqu Liedao Island later that day
9 March 1942:
Departs Qiqu Liedao Island and arrives at Heiniu Bay.
11 March 1942:
Departs Qiqu Liedao Island on ASW duties and arrives NE of Taichow Islands later in the day.
12 March 1942:
Departs Taichow Islands waters on ASW duties.
13 March 1942:
Arrives five nautical miles S of Kei Shannan. Departs there on ASW duties.
14 March 1942:
Arrives at Taichow Islands. At 1140, comes alongside and loads fresh food from auxiliary storeship KOSOKU MARU No. 3. At 1150, comes alongside and loads canteen goods from IJN shared tanker (B/C-AO) TAKATORI MARU No. 1. At 1250, comes alongside and loads boiler water from auxiliary oiler KORYU (974 GRT) MARU.
15 March 1942:
Departs Taichow Islands and arrives N of Yu Shan. At 1300, lands SNLF troops. They embark at 1850. Departs Yu Shan waters and arrives at Shipu later that day.
16 March 1942:
Released from the 8th Warning Corps under instruction No. 843. Departs Shipu and arrives at Niubi Shan Waterways later in the day.
17 March 1942:
Departs Niubi Shan Waterways and arrives at Dinghai. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21. Departs Dinghai later that day.
18 March 1942:
Arrives at Jiangnan and tethers at Buoy No. 3.
19 March 1942:
Departs Wusong and arrives at Jiangnan later that same day. Lands ammunition and firearms. Loads canteen goods, quartermaster items, military shirts and other sundries. Enters drydock No. 2.
20 ~ 27 March 1942:
Undergoes internal boiler cleaning, engine repair and maintenance.
27 March 1942:
Undocked.
30 March 1942:
Loads firearms and boiler water.
31 March 1942:
Loads boiler water.
2 April 1942:
Departs Jiangnan and arrives at Shanghai later that day tethering at Coal pier. Loads fresh food.
3 April 1942:
Loads coal. Departs Shanghai later in the day.
4 April 1942:
Arrives at Dinghai. Departs later that day.
5 April 1942:
Arrives at Taichow Islands.
7 April 1942:
Departs Taichow Islands on ASW duties.
8 April 1942:
Arrives back at Taichow Islands.
9 April 1942:
Lends temporarily to landing craft JUNKYO MARU No. 1, her No. 2 7.7mm MG. Departs Taichow Islands on ASW duties.
10 April 1942:
Arrives back at Taichow Islands.
11 April 1942:
Loads fresh food. Departs Taichow Islands on ASW duties and arrives at Heiniu Bay later in the day.
12 April 1942:
Departs Heiniu Bay and arrives at Yuet Ching Bay later that day.
13 April 1942:
Departs Yuet Ching Bay.
14 April 1942:
Arrives at Taichow Islands.
15 April 1942:
Loads fresh food. Departs Taichow Islands and arrives at Shipu later in the day.
17 April 1942:
Departs Shipu and arrives at Dinghai later that day.
18 April 1942:
Loads coal.
20 April 1942:
Departs Dinghai and arrives Off Jue Chi, later that same day. At 1540, lands SNLF troops.
21 April 1942:
Departs Jue Chi and arrives at Shipu.
22 April 1942:
At 0730, lands SNLF troops. They come back aboard at 1230. Loads fresh food.
23 April 1942:
Departs Shipu on fire drill and calls back later. Departs there and arrives at Sanmen Bay later that day.
24 April 1942:
Departs Sanmen Bay and arrives at Taichow Islands later in the day.
25 April 1942:
Departs Taichow Islands and arrives at Yuet Ching Bay later that same day.
26 April 1942:
Departs Yuet Ching Bay.
27 April 1942:
At 0600, joins a convoy as escort. This convoy, the Third Tank Corps transportation bound for Dairen, Manchuria (now Dalian, northern China), consists of IJA transports MYOKO, ATLAS, TSUYAMA, MOMOYAMA, FRANCE, HEIAN, RYUNAN, GLASGOW, TOKIWA, HAVRE and SANKO MARUs escorted by unknown units of the North China area fleet.
28 April 1942:
At 0700, ends escort and arrives off Jue Chi. Loads food.
28 April ~ 2 May 1942:
Provides assistance for recovering a US crashed aircraft.
3 May 1942:
Her CO is temporarily transferred to auxiliary gunboat NISSHO MARU No. 12. Departs Jue Chi waters and arrives at Dinghai. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21 later in the day.
3 ~ 4 May 1942:
Loads coal.
6 May 1942:
Departs Dinghai and arrives off Jue Chi. Her CO comes back aboard.
7 May 1942:
Loads fresh water.
8 May 1942:
Departs Jue Chi waters on ASW duties.
9 May 1942:
Arrives at Dayu Shan.
10 May 1942:
Departs Dayu Shan and arrives at Yuet Ching Bay.
11 May 1942:
Comes alongside and loads fresh food from auxiliary storeship ZUIHO MARU.
12 May 1942:
Departs Yuet Ching Bay and arrives at Taichow Islands later that day.
13 May 1942:
Departs Taichow Islands and arrives at Fu Du Waterways later that same day.
14 May 1942:
Departs Fu Du Waterways and arrives at Wusong later in the day.
15 May 1942:
Departs Wusong and arrives at Shanghai later that day, tethering at Navy pier. Loads coal.
16 May 1942:
Departs Navy pier and tethers at Buoy No. 4. Loads Fresh water, fresh food and quartermaster items.
17 May 1942:
Loads grain products.
18 May 1942:
Departs Shanghai.
19 May 1942:
Arrives at Shipu.
20 May 1942:
Assigned to the 2nd Patrol Unit.
21 May 1942:
Comes alongside and loads fresh food from auxiliary storeship ZUIHO MARU. Departs Shipu.
22 May 1942:
Arrives at Shanghai. Loads fresh water and quartermaster items.
23 May 1942:
Loads coal, fuel and canteen goods.
24 May 1942:
Embarks SNLF troops.
25 May 1942:
Arrives at Shipu.
26 May 1942:
Departs Shipu and arrives at Shepan waters. At 2100, fires warning shots as intimidation measure.
27 May 1942:
At 0600, fires warning shots. Departs Shepan waters and arrives at Sanmen Bay later in the day.
28 May 1942:
Departs Sanmen Bay and arrives at Taichow Islands later that day. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
29 May 1942:
Departs Taichow Islands and arrives at Yuet Ching Bay later that day. At 1900, SNLF troops are scheduled to be transferred to auxiliary gunboat NISSHO MARU No. 12.
30 May 1942:
At 0330, SNLF troops starts transfer. At 0430, departs Yuet Ching Bay. At 0530, SNLF raiding party sweeps Yuhuan Island. At 0730, they head to Yuet Ching. At 0950, fires warning shots over Qinjiang Road and fires some others at 1100.
31 May 1942:
Departs Yuet Ching and arrives at Yuet Ching Bay later in the day. At 1700, SNLF raiding party returns to auxiliary gunboat NISSHO MARU. At 1800, they are transferred to DAIGEN MARU No. 7.
1 June 1942:
Assigned to China, Shanghai Naval District, 1st Raid Corps, 14th Gunboat Division.
2 June 1942:
Departs Yuet Ching Bay and arrives at Yuet Ching. At 0730, lands SNLF troops. They come back aboard at 1200. Departs Yuet Ching and arrives at Yuet Ching Bay later that day.
3 June 1942:
At 0600, lands SNLF troops. Departs Yuet Ching Bay and arrives at Heiniu Bay later in the day. At 1440, SNLF troops re-embark.
4 June 1942:
Departs Heiniu Bay and calls at Daiyu Bay. At 1230, disembarks SNLF troops. At 1530, embarks SNLF troops and departs there, arriving off Guandong Bay later that day.
5 June 1942:
At 0500, lands SNLF troops. At 0520, departs Guandong Bay waters and at 0720, arrives at Sha Harbor. At 0800, SNLF troops re-embark. At 1430 fire her guns. At 1600, lands SNLF troops. They board the ship at 1700. Searchlights are illuminated during the night as intimidation measure.
6 June 1942:
Departs Sha Harbor and arrives at Qiqu Liedao Island later that same day.
7 June 1942:
Comes alongside, loads coal and fresh water from IJN shared tanker (B/C-AO) TAKATORI MARU No. 1.
8 June 1942:
Departs Qiqu Liedao Island and arrives at Fuyao Island later in the day.
9 June 1942:
Departs Fuyao Island and arrives at Sansha later that day. At 0640, lands SNLF troops. They re-embark at 1500.
10 June 1942:
Departs Sansha and arrives at North Island later that same day. At 0900, disembarks SNLF troops. At 1600, embarks SNLF troops.
11 June 1942:
Departs North Island and arrives at Daikin. At 0740, disembarks SNLF troops. At 1400, embarks SNLF troops. Departs Daikin and arrives at Fuyao Island later that day. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
12 June 1942:
Comes alongside and loads goods from cargo ship KATSUYAMA MARU.
13 June 1942:
Departs Fuyao Island and arrives at Qiqu Liedao Island.
14 June 1942:
Detonates a few mines with her guns. At 0500, disembarks SNLF troops. At 1030, they board the ship.
15 June 1942:
Departs Qiqu Liedao Island and arrives at Taichow Islands later in the day. Loads fresh food.
16 June 1942:
Comes alongside and loads fresh food from lighter SENSHO MARU.
17 June 1942:
Departs Taichow Islands and arrives at Sanmen Bay later that day.
18 June 1942:
At 0630, disembarks SNLF troops. At 1400, they board the ship.
19 June 1942:
Departs Sanmen Bay and arrives at Shipu later that same day.
20 June 1942:
Departs Shipu and arrives at Niubi Shan later in the day.
21 June 1942:
Departs Niubi Shan.
22 June 1942:
Arrives at Shanghai. SNLF troops are landed. Loads quartermaster items.
23 June 1942:
Loads goods and fresh water.
24 June 1942:
Loads coal. Departs Shanghai.
25 June 1942:
Arrives at Shipu. IJN Reserve Captain Kitagawa Mamoru is appointed CO.
27 June 1942:
Departs Shipu and arrives at Yuet Ching Bay later that day.
29 June 1942:
Loads fresh food.
30 June 1942:
Departs Yuet Ching Bay and arrives at Taichow Islands later that day. Loads fresh water.
1 July 1942:
Departs Taichow Islands.
2 July 1942:
Arrives at Shanghai. Loads coal. Departs there and arrives at Jiangnan later that day.
3 July 1942:
Loads fresh food.
4 July 1942:
Loads grain products and fresh water. Undergoes condenser tubes tests.
5 July 1942:
Engine repair is completed. Departs Jiangnan and arrives at Shanghai later in the day. Loads fresh food and quartermaster items.
6 July 1942:
Embarks elements of Shanghai SNLF Brigade. Captain Kitagawa boards the ship. Departs Shanghai and arrives at Huo Shan Archipelago later in the day.
7 July 1942:
Departs Huo Shan Archipelago and arrives at Taichow Islands later that same day.
8 July 1942:
Departs Taichow Islands and arrives at Qiqu Liedao Island later in the day.
9 July 1942:
Departs Qiqu Liedao Island and arrives at Yuet Ching Bay later that day.
10 July 1942:
Departs Yuet Ching Bay and arrives off Luian later that day.
12 July 1942:
Departs Luian waters and arrives at Heiniu Bay later that day. Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
14 July 1942:
Departs Heiniu Bay and arrives at Yuet Ching Bay later that same day. Loads quartermaster items.
17 July 1942:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21. Later, comes alongside and loads coal and fresh water from IJN shared tanker (B/C-AO) TAKATORI MARU No. 1.
18 July 1942:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
19 July 1942:
Loads fresh water.
21 July 1942:
Mine clearing duties in channel are completed.
24 July 1942:
Engages in minesweeping off Yuet Ching Bay with destroyer TSUGA. Comes alongside and loads boiler water and fuel from auxiliary oiler KORYU (974 GRT) MARU.
25 July 1942:
At 1900, embarks minesweeper team.
26 July 1942:
Comes alongside and loads fresh food from auxiliary storeship SUMIYOSHI MARU. Departs Yuet Ching Bay and arrives off Ao Jiang later that day.
27 July 1942:
At 0739, disembarks SNLF troops on sweeping mission. Loads coal and fresh water. SNLF raiding party boards ship later in the day.
28 July 1942:
Departs Ao Jiang waters and arrives at Yuet Ching Bay. Comes alongside and loads coal and fresh water from IJN shared tanker (B/C-AO) TAKATORI MARU No. 1.
29 July 1942:
At 0715, disembarks minesweeper team to clear mines up to Wenchow (now Wenzhou). Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21. At 1900, embarks minesweeper team.
4 August 1942:
Comes alongside and loads fresh food from auxiliary storeship SUMIYOSHI MARU.
9 August 1942:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
10 August 1942:
At 0600, lands workers on pontoon. They re-embark at 1400.
15 August 1942:
At 0630 departs Yuet Ching Bay and arrives off Le Qing Ao later at 1200. Replenished with fresh food by storeship SUMIYOSHI MARU. At 1510, fires shells over Qingjiang Road. At 2045, searchlights are switched on.
16 August 1942:
At 1150 departs Le Qing Ao towing a captured ship (possibly a pirate junk) and arrives at Taichow islands at 1900.
17 August 1942:
At 0700 departs Taichow Islands and arrives at Shipu at 1400.
18 August 1942:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21. At 0600 departs Shipu and at 1620 arrives at Yu Ching Nao, Huashan Archipelago later that day.
19 August 1942:
At 0600 departs Yu Ching Nao and arrives at Wusong at 1920. Hands over the captured ship (possibly a captured pirate junk) to fleet auxiliary salvage and repair vessel KASAJIMA.
20 August 1942:
At 0830 departs Wusong and arrives at Jiangnan at 1130.
21 August 1942:
Loads canteen goods and minesweeping light equipment from Shanghai Special Naval Base Force.
26 August 1942:
Loads fresh food.
28 August 1942:
Undergoes fresh coating on hull both sides.
29 August 1942:
Loads canteen goods, fresh water and fresh food and undergoes hull cleaning.
31 August 1942:
At 1430 departs Jiangnan and arrives at Shanghai at 1530. Loads coal and departs Shanghai on ASW duties at 1900.
2 September 1942:
Arrives at Yuet Ching bay. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
6 September 1942:
Departs Yuet Ching Bay and arrives at Ni Yushan later that day. At 1230, minesweeping team starts clearing mines in the area. They re-embark at 1945.
7 September 1942:
Departs Ni Yushan and arrives at Tongpan Shan later in the day. At 0800, minesweeping team starts clearing mines. They re-embark at 1105. Departs there and arrives at Nanji Shan later that same day. Comes alongside and loads fresh food from auxiliary storeship SUMIYOSHI MARU.
8 September 1942:
Departs Nanji Shan and arrives at Taichow Islands later that day.
10 September 1942:
Departs Taichow Islands and arrives at Kinmen Island later that day. At 0930, disembarks SNLF troops. They re-embark at 1635.
11 September 1942:
Departs Kinmen Island and arrives at Taichow Islands later in the day.
12 September 1942:
Departs Taichow Islands and arrives back there later that same day.
14 September 1942:
Departs Taichow Islands and arrives at Nanji Shan later that day.
15 September 1942:
Departs Nanji Shan searching for lighter ZUIUN MARU in distress and arrives at Heiniu Bay later that same day. That same day, DAIGEN MARU No. 7 is released from the 1st Raid Force under Shanghai Naval District telegram No. 43. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
16 September 1942:
Departs Heiniu Bay and arrives at Shipu.
18 September 1942:
Departs Shipu and arrives at Dinghai. Comes alongside and loads fresh food from auxiliary storeship SUMIYOSHI MARU.
19 September 1942:
Loads coal. Departs Dinghai and arrives at Fu Du Waterways later in the day.
20 September 1942:
Departs Fu Du Waterways and arrives at Shipu later that day.
23 September 1942:
Departs Shipu on junk inspection duties in ‘AB District’ and arrives back there later in the day.
25 September 1942:
Departs Shipu and arrives at Dinghai later that day. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
28 September 1942:
Departs Dinghai and arrives at Shipu later in the day.
29 September 1942:
Departs Shipu and arrives at Sanmen Bay later that day.
1 October 1942:
Departs Sanmen Bay and arrives at Taichow Islands later in the day. Comes alongside and loads fresh food from auxiliary storeship SUMIYOSHI MARU.
2 October 1942:
Departs Taichow Islands on ASW duties and arrives back there later that same day.
4 October 1942:
Departs Taichow Islands and arrives at Shipu.
5 October 1942:
Departs Shipu searching for escaped prisoners and arrives back there later in the day.
7 October 1942:
Comes alongside auxiliary storeship KOSOKU MARU No. 3 and loads fresh food. Departs Shipu and arrives at Niubi Shan Waterways later that day.
8 October 1942:
Departs Niubi Shan Waterways and arrives at Dinghai later that same day. Loads coal.
11 October 1942:
Departs Dinghai and arrives at Jiu Shan Islands later that day.
12 October 1942:
Departs Jiu Shan Islands and arrives at Shipu that same day. Departs later for Taichow Islands.
14 October 1942:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
15 October 1942:
Departs Taichow Islands and arrives at Shipu later that day.
20 October 1942:
Loads coal.
21 October 1942:
Departs Taichow Islands.
22 October 1942:
At 0835, meets up with sistership auxiliary gunboat TOSHO MARU.
23 October 1942:
Arrives at Qiqu Liedao Island.
24 October 1942:
Departs Qiqu Liedao Island and arrives at Taichow Islands later that same day.
25 October 1942:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
26 October 1942:
Departs Taichow Islands and arrives at Heiniu Bay later that day.
30 October 1942:
Comes alongside and loads fresh food from auxiliary storeship SUMIYOSHI MARU.
31 October 1942:
Departs Heiniu Bay.
1 November 1942:
Arrives at Taichow Islands. Departs there and arrives at Shipu later in the day.
2 November 1942:
Departs Shipu and arrives at Huo Shan Archipelago later that day.
3 November 1942:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22. Departs Huo Shan Archipelago.
4 November 1942:
Arrives at Wusong. Departs there and arrives at Jiangnan. Starts repairs to hull and boiler leaks.
5 November 1942:
Undergoes deck, bridge and superstructures coating.
6 November 1942:
Undergoes inner and outer hull coating.
7 November 1942:
Loads quartermaster provisions.
9 November 1942:
Loads canteen goods and fresh water.
10 November 1942:
Loads fresh food.
10 ~ 11 November 1942:
Undergoes interior coating.
11 November 1942:
Maintenance and repairs are completed. Departs Jiangnan and arrives at Shanghai later that same day.
12 November 1942:
Loads coal and fresh food. Departs Shanghai.
13 November 1942:
Arrives at Shipu.
14 November 1942:
Departs Shipu and arrives at Taichow Islands later that day.
15 November 1942:
Departs Taichow Islands and arrives at Yuet Ching Bay later that same day.
20 November 1942:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
21 November 1942:
Departs Yuet Ching Bay and arrives at Taichow Islands later that same day.
22 November 1942:
Departs Taichow Islands and arrives at Fu Du Waterways later in the day.
23 November 1942:
Departs Fu Du Waterways and arrives at Dinghai later that same day.
23 ~ 25 November 1942:
Undergoes boiler pipe repair.
24 November 1942:
Comes alongside and loads fresh food from auxiliary storeship SUMIYOSHI MARU. Departs Dinghai.
26 November 1942:
Arrives at Shipu.
27 November 1942:
Departs Shipu and arrives at Taichow Islands later in the day.
28 November 1942:
Departs Taichow Islands and arrives at Heiniu Bay later in the day.
29 November 1942:
Departs Heiniu Bay and arrives at Nanji Shan later that same day.
30 November 1942:
Departs Nanji Shan and arrives at Fuyao Island, Wensan station later in the day.
1 December 1942:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
2 December 1942:
Departs Fuyao Island, Wensan station and arrives at Heiniu Bay later that day.
3 December 1942:
Departs Heiniu Bay and arrives at Yuet Ching Bay later that day. Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
7 December 1942:
Departs Yuet Ching Bay and arrives at Taichow Islands later that same day. Comes alongside and loads boiler water from auxiliary oiler KORYU (974 GRT) MARU. Comes alongside and loads fresh food from auxiliary storeship SUMIYOSHI MARU.
8 December 1942:
Departs Taichow Islands and arrives at Shipu later that day.
9 December 1942:
Departs Shipu and arrives at Fu Du Waterways later that same day.
10 December 1942:
Departs Fu Du Waterways and arrives at Dinghai later in the day. Loads coal.
12 December 1942:
Departs Dinghai and arrives at Jiu Shan Islands later that day.
13 December 1942:
Departs Jiu Shan Islands and arrives at Shipu later that day.
14 December 1942:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
15 December 1942:
Departs Shipu and arrives at Sanmen Bay later that same day.
16 December 1942:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
17 December 1942:
Departs Sanmen Bay and arrives at Taichow Islands later in the day.
19 December 1942:
Departs Taichow Islands and arrives at Yuet Ching Bay later that day.
22 December 1942:
Departs Yuet Ching Bay and arrives at Taichow Islands later that day. Comes alongside and loads fresh food from auxiliary storeship SUMIYOSHI MARU.
26 December 1942:
Departs Taichow Islands and arrives at Shipu later in the day.
28 December 1942:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22. Departs Shipu and arrives at Qiqu Liedao Island later that day.
29 December 1942:
Departs Qiqu Liedao Island and arrives at Jiangnan later that same day.
30 December ~ 18 January 1942:
Undergoes maintenance and repairs at Jiangnan shipyard.
30 December 1942:
Loads clothing, quartermaster items and provisions.
4 January 1943:
Loads fresh water. Undergoes starboard and port hull coating.
6 January 1943:
Loads canteen goods and grain products.
7 January 1943:
Loads canteen goods, fresh food and quartermaster items.
8 January 1943:
Undergoes starboard and port hull coating.
10 January 1943:
Loads fresh food.
12 January 1943:
Loads fresh water.
13 January 1943:
Departs Jiangnan and arrives back there later that day.
14 January 1943:
Departs Jiangnan again and arrives back there later that same day. Loads coal and fresh food.
16 January 1943:
Loads canteen goods and fresh water.
19 January 1943:
Departs Jiangnan and arrives at Shanghai later in the day. Loads coal and fresh food.
20 January 1943:
Departs Shanghai.
21 January 1943:
Arrives off Yu Ching Nao.
22 January 1943:
Departs Yu Ching Nao waters and arrives at Shipu later that day.
23 January 1943:
Departs Shipu and arrives at Taichow Islands later that same day.
24 January 1943:
Departs Taichow Islands, calls at Nanji Shan; departs there and arrives at Inkogu Island later in the day.
26 January 1943:
Comes alongside auxiliary storeship BANSHU MARU No. 16 and loads fresh food.
27 January 1943:
Departs Inkogu Island and arrives at Fuyao Island later in the day.
30 January 1943:
Departs Fuyao Island and arrives at Beiguan Harbor later that day.
31 January 1943:
Departs Beiguan Harbor and arrives at Qiqu Liedao Island later that day. Loads fresh water.
2 February 1943:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
4 February 1943:
Departs Qiqu Liedao Island and arrives at Taichow Islands later that day.
5 February 1943:
Departs Taichow Islands and arrives at Shipu later in the day.
7 February 1943:
Departs Shipu and arrives at Fu Du Waterways later that day.
8 February 1943:
Departs Fu Du Waterways and arrives at Dinghai later same day.
9 February 1943:
Loads coal. Comes alongside auxiliary storeship BANSHU MARU No. 16 and loads fresh food.
11 February 1943:
Departs Dinghai and arrives at Shipu later that day.
13 February 1943:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
16 February 1943:
Departs Shipu and arrives at Taichow Islands later in the day.
17 February 1943:
Departs Taichow Islands and arrives at Yuet Ching Bay later that day.
18 February 1943:
Departs Yuet Ching Bay and arrives at Qiqu Liedao Island later that same day.
19 February 1943:
Departs Qiqu Liedao Island and arrives at Taichow Islands later in the day.
20 February 1943:
Comes alongside auxiliary storeship BANSHU MARU No. 16 and loads fresh food. Departs Taichow Islands and arrives at Shipu later that day.
23 February 1943:
Departs Shipu on ASW duties and arrives at Shenjiamen later in the day.
24 February 1943:
Departs Shenjiamen and arrives at Dinghai later that day. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
25 February 1943:
Loads coal.
27 February 1943:
Departs Dinghai.
28 February 1943:
Arrives at Yuet Ching Bay.
5 March 1943:
Departs Yuet Ching Bay and arrives at Taichow Islands later in the day. Comes alongside auxiliary storeship BANSHU MARU No. 16 and loads fresh food.
8 March 1943:
Departs Taichow Islands on ASW duties and arrives back there later that day.
9 March 1943:
Departs Taichow Islands on ASW duties and arrives back there later that day. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
10 March 1943:
Departs Taichow Islands on ASW duties.
12 March 1943:
Arrives at Dinghai. Loads 187-tons of charcoal.
14 March 1943:
Departs Dinghai. Comes alongside auxiliary storeship BANSHU MARU No. 16 and loads fresh food.
15 March 1943:
Arrives off Wusong. Departs there and arrives at Jiangnan later that same day.
15 ~ 21 March 1943:
Undergoes bottom hull maintenance and hull, weapons and engine repairs at Jiangnan shipyard.
16 March 1943:
Loads fresh food.
20 March 1943:
Loads 279-tons of fresh water.
21 March 1943:
Departs Jiangnan and arrives at Shanghai. Loads provisions and 50-tons of charcoal. Departs Shanghai later in the day.
22 March 1943:
Arrives at Shipu.
25 March 1943:
Departs Shipu and arrives at Taichow Islands later that day.
26 March 1943:
Undergoes emergency repairs in the steering gear room starboard outer plate.
27 March 1943:
Comes alongside auxiliary storeship BANSHU MARU No. 16 and loads fresh food.
31 March 1943:
Departs Taichow Islands and arrives at Shipu later that day.
2 April 1943:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
5 April 1943:
Departs Shipu and arrives at Fu Du Waterways later in the day.
6 April 1943:
Departs Fu Du Waterways and arrives at Dinghai later that day. Loads coal.
7 April 1943:
Comes alongside and loads fresh food from lighter SENSHO MARU.
9 April 1943:
Departs Dinghai and arrives at Shipu later in the day.
14 April 1943:
Departs Shipu and arrives at Taichow Islands later that day. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
17 April 1943:
Departs Taichow Islands and arrives at Dinghai later that day.
18 April 1943:
Loads coal.
19 April 1943:
Departs Dinghai on ASW duties.
20 April 1943:
Arrives at Shipu.
22 April 1943:
Departs Shipu and arrives at Taichow Islands later that day. Comes alongside and loads fresh food from lighter SENSHO MARU.
28 April 1943:
Departs Taichow Islands and arrives at Yuet Ching Bay later that day. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
30 April 1943:
Tethers to rotating anchor.
1 May 1943:
Departs Yuet Ching Bay. At 0500, escorts Hong Kong No. 32 convoy consisting of at least IJA transports HAVRE, NIKKYU and GYOTEN (ex-British EMPIRE PAGODA) MARUs with torpedo boat KASASAGI, flagship of the Second China Expeditionary Fleet. At 1140, provides assistance to GYOTEN MARU that hit a mine with five crewmen slightly injured. At 1920, under dense fog, scratches a reef off Jiu Shan Archipelago with no damage sustained. Passenger/cargo ship (ex-auxiliary gunboat) CHOHEI MARU is also stranded but immediately refloated without damage. At 1940, drops anchor at Jiu Shan Archipelago.
2 May 1943:
Departs Jiu Shan Archipelago.
3 May 1943:
Arrives at Taichow Islands.
5 May 1943:
Departs Taichow Islands.
6 May 1943:
Arrives at Dinghai.
9 May 1943:
Departs Dinghai.
10 May 1943:
Arrives at Taichow Islands.
19 May 1943:
Departs Taichow Islands and arrives at Shipu later that day.
21 May 1943:
Departs Shipu.
22 May 1943:
Arrives at Shanghai.
24 May 1943:
Enters Pudong shipyard drydock. Undergoes hull, engine and weapons repairs. Remodelling of deck, boiler water tank, transmission room, etc.
5 June 1943:
Departs Shanghai and arrives at Jiangnan later in the day. Loads fresh food.
5 ~ 25 June 1943:
Undergoes hull, engine and weapons repairs. Control room ceiling repair, manual wheelhouse, transmission room, etc. at Jiangnan shipyard by the 101st Naval Construction Unit.
10 June 1943:
Enters Jiangnan shipyard drydock.
25 June 1943:
Undocked. Loads fresh food.
26 June 1943:
Loads canteen goods.
29 June 1943:
IJN Reserve Captain Kitagawa Mamoru is confirmed as CO.
17 July 1943:
Loads fresh food.
22 July 1943:
Departs Jiangnan on trials and arrives there later in the day.
23 July 1943:
Departs Jiangnan and arrives at Shanghai later that same day. Tethers at Mitsui Navy pier.
24 July 1943:
Loads coal and boiler water. Departs Shanghai later in the day.
25 July 1943:
Arrives at Shipu.
26 July 1943:
Departs Shipu and arrives at Taichow Islands later that day.
28 July 1943:
Departs Taichow Islands to escort convoy No. 705 and arrives at Fu Du Waterways later that same day.
29 July 1943:
Departs Fu Du Waterways, calls at Dinghai; departs there and arrives back at Fu Du Waterways later in the day.
30 July 1943:
Departs Fu Du Waterways and arrives at Taichow Islands later that day.
31 July 1943:
Departs Taichow Islands and arrives at Dinghai later that same day.
1 August 1943:
Some men aboard suffer from dysentery. Departs Dinghai and arrives downstream Wusong later in the day.
2 August 1943:
Departs Wusong waters and arrives at Shanghai later that day.
3 August 1943:
Loads fresh food.
4 August 1943:
Loads 100-tons of fresh water.
5 August 1943:
Loads 100-tons of fresh water and fresh food.
7 August 1943:
Loads fuel, fresh water and fresh food.
8 August 1943:
Departs Shanghai.
9 August 1943:
Arrives at Dinghai.
12 August 1943:
Assigned to the 6th Warning Corps under Shanghai Naval District telegram No. 291.
14 August 1943:
Departs Dinghai and arrives at Shipu.
15 August 1943:
Departs Shipu and arrives at Taichow Islands.
16 August 1943:
Comes alongside and loads fresh food from lighter RYOSEI MARU No. 2. Comes alongside and loads fuel and boiler water from auxiliary oiler KORYU (974 GRT) MARU
17 August 1943:
Departs Taichow Islands and undergoes various drills: gunfire, navigation, fire hazard, damage control, rescue, etc. Arrives back there later that day.
18 August 1943:
Departs Taichow Islands, calls at Pi Shan; departs there and arrives at Qiqu Liedao Island later that same day.
19 August 1943:
Departs Qiqu Liedao Island and arrives at Fuyao Island later in the day.
20 August 1943:
Departs Fuyao Island and arrives at Matsu Islands, Formosa (now Taiwan) later that day.
22 August 1943:
Departs Matsu Islands and arrives at Fuyao Island later that same day.
23 August 1943:
Departs Fuyao Island and arrives at Heiniu Bay later in the day.
24 August 1943:
Departs Heiniu Bay and arrives at Qiqu Liedao Island later that day.
25 August 1943:
Departs Qiqu Liedao Island and calls at Taichow Islands; departs there to escort convoy No. 506 and arrives at Kinmen Island later that same day.
26 August 1943:
Departs Kinmen Island on ASW drill; drops one depth-charge (DC) off Yushan and arrives at Jiu Shan Archipelago later in the day.
27 August 1943:
Departs Jiu Shan Archipelago and arrives at Dinghai later that day. Comes alongside and loads fresh food from lighter RYOSEI MARU No. 2.
28 August 1943:
Loads coal. Departs Dinghai and arrives in Dongsha vicinity later in the day.
29 August 1943:
Departs Dongsha waters and arrives Hua Niao Shan later that day.
30 August 1943:
Departs Hua Niao Shan and arrives at Shanghai later that same day.
1 September 1943:
Loads fresh food and boiler water.
2 September 1943:
Departs Shipu and arrives at Jiuduan later in the day.
3 September 1943:
Departs Jiuduan and arrives at Dinghai later that day.
4 September 1943:
Departs Dinghai and arrives at Shipu later that same day.
5 September 1943:
Departs Shipu and arrives at Taichow Islands later in the day.
6 September 1943:
Departs Taichow Islands and arrives at Fuyao Island later that day.
8 September 1943:
Departs Fuyao Island to escort convoy No. 705 and arrives at Heiniu Bay later that day.
9 September 1943:
Comes alongside and loads fresh food from lighter RYOSEI MARU No. 2. Departs Heiniu Bay and arrives at Fuyao Island.
11 September 1943:
Departs Fuyao Island and arrives at Dayu Bay.
12 September 1943:
Departs Dayu Bay and arrives back there later in the day.
13 September 1943:
Departs Dayu Bay again and arrives N of Longshan later that day.
14 September 1943:
Departs Longshan waters and arrives at Heiniu Bay. Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22. Departs Heiniu Bay and arrives at Dayu Bay later that same day.
15 September 1943:
Departs Dayu Bay and arrives at Fuyao Island later in the day.
17 September 1943:
Departs Fuyao Island and arrives at Heiniu Bay later that day.
18 September 1943:
Departs Heiniu Bay and arrives at Taichow Islands later that same day.
20 September 1943:
Comes alongside and loads fresh food from lighter EBISU MARU No. 13. Departs Taichow Islands to escort convoy No. 803 and arrives back there. Departs again later in the day.
21 September 1943:
Arrives at Fu Du Waterways.
22 September 1943:
Departs Fu Du Waterways and arrives at Dinghai later that day. Comes alongside and loads boiler water from lighter TOYOKUNI MARU.
22 ~ 23 September 1943:
Replenishes coal.
23 September 1943:
Comes alongside and loads boiler water from IJA transport KANAN MARU.
25 September 1943:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
26 September 1943:
Departs Dinghai and arrives at Kinmen Island later that day.
27 September 1943:
Departs Kinmen Island and calls at Taichow Islands; departs there and arrives at Heiniu Bay later that same day.
28 September 1943:
Departs Heiniu Bay and arrives at Fuyao Island later in the day.
30 September 1943:
Departs Fuyao Island.
1 October 1943:
Arrives at Heiniu Bay. Departs there and arrives at Taichow Islands later that day.
2 October 1943:
Comes alongside and loads boiler water from Comes alongside and loads boiler water from lighter TOYOKUNI MARU and from IJA transport KANAN MARU. Departs Taichow Islands on patrol duties and arrives back there later that same day.
3 October 1943:
Departs Taichow Islands. Fires seven shots at a village; lands there SNLF troops and arrives back at Taichow Islands later in the day.
4 October 1943:
Comes alongside and loads fresh food from civilian cargo ship (C-AK) TAISEI MARU.
5 October 1943:
Departs Taichow Islands and escorts a convoy. Arrives back there later that day.
8 October 1943:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
10 October 1943:
Departs Taichow Islands, calls at Shipu; departs there and arrives at Fu Du Waterways later that same day.
11 October 1943:
Departs Fu Du Waterways and arrives at Wusong later in the day.
12 October 1943:
Departs Wusong and arrives at Shanghai later that day.
13 October 1943:
Departs Shanghai and arrives at Jiangnan later that same day.
13 ~ 17 October 1943:
Undergoes hull, engine and weapons repairs at Jiangnan shipyard.
14 October 1943:
Loads fresh food and canteen goods.
15 October 1943:
Loads grain products.
18 October 1943:
Departs Jiangnan and arrives at Shanghai later in the day.
19 October 1943:
Loads fresh food and replenishes coal.
20 October 1943:
Departs Shanghai, calls at Qiqu Liedao Island; departs there and arrives at Dinghai later that day.
22 October 1943:
Departs Dinghai and arrives at Shipu later that same day.
23 October 1943:
Departs Shipu and arrives at Taichow Islands later in the day.
26 October 1943:
Departs Taichow Islands on ASW duties.
27 October 1943:
Arrives back at Taichow Islands. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21. Departs there on ASW duties and arrives at Heiniu Bay later that day.
28 October 1943:
Departs Heiniu Bay on ASW duties and arrives at Fuyao Island later that same day.
30 October 1943:
Departs Fuyao Island and arrives N of Longshan later in the day.
31 October 1943:
Departs Longshan waters and arrives at Taichow Islands later that day.
2 November 1943:
Comes alongside and loads boiler water from IJA transport KANAN MARU.
4 November 1943:
Departs Taichow Islands.
5 November 1943:
Arrives at Fu Du Waterways. Departs there and arrives at Dinghai later that same day.
7 November 1943:
Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21. Loads 170-tons of coal.
9 November 1943:
Departs Dinghai and arrives at Shipu later in the day.
10 November 1943:
Departs Shipu and arrives at Taichow Islands later that day.
11 November 1943:
Departs Taichow Islands and arrives at Heiniu Bay later that same day.
12 November 1943:
Departs Heiniu Bay and arrives at Taichow Islands later in the day. Comes alongside and loads boiler water from IJA transport KANAN MARU and lighter BANKI MARU.
13 November 1943:
Departs Taichow Islands on ASW duties and arrives back there later that day.
14 November 1943:
Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22. Departs Taichow Islands on ASW duties later that same day.
15 November 1943:
Arrives at Heiniu Bay.
16 November 1943:
Departs Heiniu Bay and arrives at Fuyao Island later in the day.
17 November 1943:
Departs Fuyao Island and arrives at Heiniu Bay later that day.
19 November 1943:
Departs Heiniu Bay to escort convoy No. 704.
20 November 1943:
At 0200 ends escort convoy No. 704 and reverses course. Arrives at Taichow Islands. Departs there later that same day.
21 November 1943:
Arrives at Dinghai. Replenishes coal.
23 November 1943:
Departs Dinghai and arrives at Taichow Islands. Departs there on ASW duties later in the day.
24 November 1943:
Arrives back at Taichow Islands. Departs there later that day.
25 November 1943:
Arrives back at Taichow Islands. Departs there on ASW duties and arrives at Shipu later that same day.
26 November 1943:
Departs Shipu on ASW duties and arrives at Taichow Islands.
27 November 1943:
Comes alongside and loads boiler water from IJA transports KANAN and DAINICHI MARUs. Departs Taichow Islands on ASW duties later in the day.
28 November 1943:
Arrives back at Taichow Islands.
1 December 1943:
Departs Taichow Islands to escort convoy No. 904.
2 December 1943:
Arrives at Fuyao Island. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
4 December 1943:
Departs Fuyao Island on ASW duties and arrives at Heiniu Bay later that day.
5 December 1943:
Departs Heiniu Bay on ASW duties and arrives at Taichow Islands later that same day.
6 December 1943:
Departs Taichow Islands; fires one shot southwards on a potential threat and arrives back there later in the day.
7 December 1943:
Departs Taichow Islands and arrives at Fu Du Waterways later that day.
8 December 1943:
Loads coal and fresh water.
10 December 1943:
Departs Dinghai and arrives at Fu Du Waterways later that same day.
11 December 1943:
Departs Fu Du Waterways and arrives at Sanmen Bay later in the day.
12 December 1943:
Departs Sanmen Bay and arrives at Taichow Islands later that day.
13 December 1943:
Departs Taichow Islands on emergency dispatch training and arrives back there later that same day. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
14 December 1943:
Departs Taichow Islands.
15 December 1943:
Arrives at Shipu. Departs there escorting fleet auxiliary collier MUROTO and arrives later that day at Taichow Islands.
17 December 1943:
Departs Taichow Islands and arrives at Dinghai later in the day.
18 December 1943:
Departs Dinghai.
19 December 1943:
Arrives at Wusong. Departs there and arrives at Shanghai later that day.
20 December 1943:
Departs Shanghai and arrives at Jiangnan later that same day.
20 ~ 30 December 1943:
Undergoes hull, weapons and engine repairs and internal boiler cleaning at Jiangnan shipyard.
23 December 1943:
Loads provisions.
30 December 1943:
Departs Jiangnan and arrives at Shanghai later in the day, tethering at Coal pier.
31 December 1943:
Loads coal, fresh water and fresh food.
1 January 1944:
Departs Shanghai and arrives at Niubi Shan Waterways later that day.
2 January 1944:
Departs Niubi Shan Waterways and arrives at Shipu later that same day. Comes alongside and loads fresh food from lighter SUZUHEI MARU.
3 January 1944:
Departs Shipu and arrives at Taichow Islands later in the day.
4 January 1944:
Departs Taichow Islands to escort convoy No. 111 and arrives at Fuyao Island later that day.
7 January 1944:
Departs Fuyao Island.
8 January 1944:
Arrives at Taichow Islands. Departs there and arrives at Niubi Shan Waterways later that same day.
9 January 1944:
Comes alongside and loads fresh food from lighter SENSHO MARU. Departs Niubi Shan Waterways and arrives at Dinghai later in the day.
10 January 1944:
Departs Dinghai and arrives at Taichow Islands later that day.
13 January 1944:
Departs Taichow Islands and arrives at Heiniu Bay later that same day.
14 January 1944:
Departs Heiniu Bay.
15 January 1944:
Arrives at Taichow Islands. Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
17 January 1944:
Departs Taichow Islands.
18 January 1944:
Arrives at Dinghai.
19 January 1944:
Loads coal and boiler water.
21 January 1944:
Departs Dinghai and arrives at Shipu later in the day. Comes alongside and loads fresh food from cargo ship KAIYO MARU.
22 January 1944:
Departs Dinghai and arrives at Taichow Islands later that day. Comes alongside and loads fresh food from lighter SENSHO MARU.
24 January 1944:
Departs Taichow Islands.
25 January 1944:
Arrives at Heiniu Bay. Departs there on patrol duties and arrives back later that day.
25 January 1944:
Departs Heiniu Bay and arrives back there later that same day.
26 January 1944:
Departs Heiniu Bay and arrives at Taichow Islands later in the day.
28 January 1944:
Engages in emergency steering training.
29 January 1944:
Departs Taichow Islands to patrol waters before arrival of convoy No. 902. Arrives at Dinghai later that day. Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
30 January 1944:
Zhoushan Island Guard Unit transfers one Type 93 13mm MG and related equipment to DAIGEN MARU No. 7.
1 February 1944:
Departs Dinghai and arrives at Niubi Shan vicinity later that day.
2 February 1944:
Departs Niubi Shan waters and arrives at Taichow Islands later that same day.
5 February 1944:
Departs Taichow Islands.
6 February 1944:
Arrives at Shipu. Departs there and arrives at Taichow Islands later in the day.
8 February 1944:
Comes alongside and loads boiler water from lighters SUZUHEI and HEISHICHI MARUs.
10 February 1944:
Departs Taichow Islands and arrives at Dalu Shan west coast later that day.
11 February 1944:
Departs Dalu Shan west coast to patrol waters before arrival of convoy No. 001. Arrives at Taichow Islands later that same day.
12 February 1944:
Departs Taichow Islands on ASW duties and arrives back there later in the day.
13 February 1944:
Departs Taichow Islands on ASW duties and arrives back there later in the day. Comes alongside and loads fresh food from auxiliary storeship BANSHU MARU No. 21.
14 February 1944:
Departs Taichow Islands and arrives at Niubi Shan Waterways later that day.
15 February 1944:
Departs Niubi Shan Waterways and arrives at Shipu later that same day. Comes alongside and loads boiler water from lighter TOYOKUNI MARU.
17 February 1944:
Departs Shipu and arrives at Taichow Islands later in the day.
18 February 1944:
Departs Taichow Islands and arrives at Niubi Shan Waterways later that day.
19 February 1944:
Departs Niubi Shan Waterways and arrives at Dinghai later that same day. Replenishes 99-tons of coal and 84-tons of boiler water. Comes alongside and loads fresh food from refrigerated cargo ship BANSHU MARU No. 22.
20 February 1944:
Replenishes 86-tons of coal and 20-tons of boiler water.
22 February 1944:
Departs Dinghai and arrives at Shipu later that same day.
23 February 1944:
Departs Shipu and arrives at Taichow Islands later in the day.
24 February 1944:
Departs Taichow Islands and arrives at Shipu later that day.
26 February 1944:
Departs Shipu and arrives at Taichow Islands later that same day.
27 February 1944:
Departs Taichow Islands and arrives at Shipu later in the day.
28 February 1944:
Comes alongside and loads fresh food from lighter SENSHO MARU.
1 March 1944:
Departs Shipu and calls at Taichow Islands; departs there and arrives back at Shipu; departs there later that day.
2 March 1944:
Arrives at Niubi Shan Waterways. Departs there and calls at Dinghai; departs again later that same day.
3 March 1944:
Arrives at Jiuduan. Departs there and calls at Middle Ground buoy; departs again and arrives at Shanghai later in the day.
4 ~ 8 March 1944:
All 7.7 MGs are replaced by Type 93 13mm MGs. Undergoes gas pump rod repair.
5 March 1944:
Loads boiler water and quartermaster items.
6 March 1944:
Loads coal and fresh food.
7 ~ 9 March 1944:
Fitted with one Type 93 13mm MG fire director from China Fleet base Force.
8 ~ 10 March 1944:
Undergoes repairs to port chain capstan, control room sidewall, rear platform canvas and crew quarters tatamis.
10 March 1944:
Undergoes repairs to DCs’ room armored sidewall. Loads boiler water.
11 March 1944:
Departs Shanghai and calls at Middle Ground buoy. Departs there later that day.
12 March 1944:
Arrives at Huo Shan Archipelago. Departs there, calls at Niubi Shan Waterways; departs again and arrives at Shipu later that same day.
14 March 1944:
Departs Shipu and calls at Taichow Islands. Departs there and arrives back at Shipu later in the day.
15 March 1944:
Departs Shipu and arrives at Niubi Shan Waterways.
17 March 1944:
Departs Niubi Shan Waterways and calls at Shipu; departs there and arrives at Taichow Islands later that day.
18 March 1944:
Departs Taichow Islands and arrives at Dinghai later that same day. Loads fresh food.
19 March 1944:
Loads coal and boiler water.
21 March 1944:
Departs Dinghai and arrives at Niubi Shan Waterways later in the day.
24 March 1944:
Departs Niubi Shan Waterways and arrives at Shipu later that day.
25 March 1944:
Departs Shipu and arrives at Taichow Islands later that same day.
26 March 1944:
Departs Taichow Islands and arrives at Shipu later in the day. Loads fresh food.
27 March 1944:
Departs Shipu and arrives at Niubi Shan Waterways later that day.
3 April 1944:
Departs Niubi Shan Waterways and arrives at Shipu later that day.
4 April 1944:
Departs Shipu.
5 April 1944:
Arrives at Niubi Shan Waterways.
10 April 1944:
Released from the 14th Gunboat Division under Navy instruction No. 540. Removed from the Navy list under instruction No. 541. Registered again as an auxiliary transport, (Otsu) category attached to the Kure Naval District with Kure as homeport under instruction No. 542. Assigned to China Area Fleet. [1]
26 April 1944:
Assigned to China Area Fleet, Shanghai Special Base Force, Auxiliary harbor service.
14 August 1944:
About 20 nautical miles W of Jinsen, Chosen (now Incheon, South Korea). About 0100, LtCdr (later Rear Admiral-Ret) John E. Lee's (USNA ‘30) USS CROAKER (SS-246) running on the surface detects a ship on radar. After closing the target, Lee fires a spread of four torpedoes and scores one hit on DAIGEN MARU No. 7, blowing off her stern. Dead in the water and abandoned by her crew, the transport is finished off by another spread of two torpedoes with one hit obtained. She sinks at 37-30N, 125-50E with the loss of 13 crewmen.
10 November 1944:
Removed from the Navy list under instruction No. 1258.

Authors' Notes :
[1] There were two categories of Zatsuyosen. (Ko) category with an IJN Captain as supervisor aboard and (Otsu) category without.
Thanks go to Gengoro S. Toda of Japan.
Gilbert Casse, Bob Hackett and Peter Cundall

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