(Sister BENGAL MARU, prewar)
KAIAN (YONEYAMA) MARU:
Tabular Record of
© 2012 Bob Hackett
15 August 1918:
Nagasaki. Laid down at Mitsubishi Yososen, K. K. as Yard No.
282, a 5,274-ton passenger-cargo ship for Katsuta Steamship Co., Ltd.
1 March 1919:
Launched and named KAIAN MARU.
22 March 1919:
Completed. KAIAN MARU can accommodate six 1st class passengers and carries a crew of 48.
Sold to Itaya Shosen K.K. of Kobe.
Renamed YONEYAMA MARU.
24 May 1924:
YONEYAMA MARU arrives at Seattle, Washington.
29 March 1927:
Arrives at Seattle.
25 April 1927:
Arrives at Seattle.
E October 1941:
Requisitioned by the Imperial Army (IJA) and converted to a troop transport.
8 December 1941:
The Pacific War begins.
18 December 1941: The Invasion of the Philippines -“M” Operation (M
YONEYAMA MARU paricipates in the Invasion of Lingayen Gulf,
Philippines consisting of 72 transports in three echelons carrying the main part
of LtGen Homma Masaharu's 80,000-man 14th Army. The first echelon is composed of
27 transports from Takao under Rear Admiral (later Vice Admiral) Hara Kensaburo,
the second echelon of 28 transports under Rear Admiral Nishimura and the third
echelon of 21 transports from Keelung under Rear Admiral (later Vice Admiral)
21 December 1941:
Lands troops at Lingayen Gulf.
14 April 1942: Transport Operation “U”:
YONEYAMA MARU departs Singapore as part of
Transport Unit No. 3 consisting of 32 marus including ANYO, BRAZIL, BUYO, ENGLAND, GINYO, HAMBURG, HAVRE, HOKUROKU, KUWAYAMA, KOCHI, KENKOKU, MONTREAL, PENANG, SAMARANG, SUEZ, TAIKAI, TAZAN, TEIKAI and YAWATA MARUs. The 3rd Transport Unit carries the 56th Mixed Brigade and other units and material.
19 April 1942:
Arrives at Rangoon, Burma (now Yangon, Myanmar).
30 October 1942:
YONEYAMA MARU departs Mutsure in convoy No. 180 also consisting of TAITO, and TAIRYU MARUs and three unidentified merchant ships escorted by destroyer ASAGAO.
E 3 November 1942:
Arrives at Mako.
28 March 1943:
YONEYAMA MARU departs Saeki for Palau in the “K2”
convoy (No. 8 Military Movement) also consisting of SHUNSHO and SHINTO MARUs
escorted by patrol boat PB-46 and minelayer YURIJIMA.
E 29 March 1943:
The escorts are detached at 29N.
19 May 1943:
YONEYAMA MARU departs Palau in convoy No. 2502 also
consisting of MILAN and MIYAURA MARUs and BANSHU MARU No. 15 and an unidentified
merchant escorted by subchaser CH-4.
26 May 1943:
Arrives at Balikpapan, Borneo.
27 June 1943:
At 0100, YONEYAMA MARU departs Surabaya, Java for
Rabaul in a convoy also consisting of MYOGI and SHINYU MARUs escorted by destroyer HOKAZE.
30 June 1943:
Makassar Straits, NE of Balikpapan. At 1904, LtCdr Harry
Hull’s USS THRESHER (SS-200) attacks the convoy. Hull fires three torpedoes at
the convoy, but one prematures and the others miss. The convoy escapes at full speed.
1 July 1943:
Makassar Straits, off NW Celebes. At 0157, THRESHER
again attacks the convoy. Hull fires three torpedoes at destroyer HOKAZE, but
they all miss. At 1938, THRESHER fires two torpedoes and this time gets one hit
that severely damages HOKAZE’s bow. The convoy continues on. Later, HOKAZE is
grounded to prevent sinking in Sibaya harbor, Makassar Town, Celebes. 
2 July 1943:
Celebes Sea. NE of Cape Talok. At 0053, THRESHER
torpedoes and sinks YONEYAMA MARU at 01-30N, 119-30E. Eleven gunners and an
unknown number of crewmen are KIA.
 On 3 July HOKAZE arrived at Makassar for emergency
repairs, then Surabaya for more repairs and was eventually returned to service.