(TENKAI MARU, prewar)

Tabular Record of Movement

2017 Bob Hackett

16 December 1916.:
Nagasaki. Laid down at Mitsubishi Zosen Kaisha, as Yard No. 272, a 3,203-ton cargo ship for Koyanagi H. & Co., Amagasaki.

2 September 1917:
Launched and named TENKAI MARU.

22 September 1917:

Sold to Shoichiro Koyanagi, Amagasaki.

Sold to Meiji Boyeki K. K, Amagasaki.

Sold toToyo Seito K. K, Takao, Formosa (Kaoshiung, Taiwan).

Sold to Formosa Seito K. K, Takao Formosa (Kaoshiung, Taiwan).

Sold to Meiji Kaiun K. K., Tokyo.

31 March 1933:
Sold to Shimatani Kisen K. K.

24 July 1943:
Requisitioned by the Imperial Army (IJA) and converted to a troop transport. Allotted IJA ship No. 1078.

6 December 1942:
TENKAI MARU departs Tateyama in the 60th northbound convoy consisting of IJA transports GOZAN and JOGU MARUs and civilian ore carrier (C-AC) TSUKUSHI MARU escorted by gunboat HIYOSHI MARU No. 2 GO.

E 9 December 1942:
Arrives at Muroran.

24 July 1943:
TENKAI MARU departs Saeki escorting convoy O-406 consisting of FUKUYAMA, UCHIDE, KINE, KAZUURA, NISHIYAMA (SEIZAN) MARUs escorted by kaibokan IKI, minelayer YURIJIMA and auxiliary minesweeper TAKUNAN MARU No. 8 .

E 26 July 1943:
At 29N, YURIJIMA and TAKUNAN MARU No. 8 are detached.

2 August 1943:
At 11N, torpedo boat HATO joins the escort. Later that day, the convoy arrives at Palau.

2 September 1943:
At 0600, TENKAI MARU departs Palau for Wewak, New Guinea in convoy "Wewak No. 8" also consisting of SHINSEI MARU escorted by subchaser CH-33. TENKAI MARU is carrying 60 troops and a cargo of ammunition, gasoline and automobiles.

5 September 1943:
At 1312, LtCdr (later Captain) Frank M. Parker's (USNA 32) USS SWORDFISH (SS-193) fire four torpedoes at TENKAI MARU and gets one hit portside amidships. TENKAI MARU is set afire. At 1420, she sinks at 01-10N, 142-10E. Three passengers and three crewmen are KIA. CH-33 counterattacks and drops 10 depth charges, but without effect.

Authors Notes:
Thanks go to Erich Muehlthaler of Germany.

- Bob Hackett

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