japanese Imperial Japanese Navy - IJN - 大日本帝国海軍 Ryusei Maru (+1944)
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nationality japanese
purpose transport
type cargo ship
propulsion steam
date built 1911
weight (tons) 4777  grt
dimensions 117.3 x 15.5 x 8.4 m
material steel
engine 1 x 3 cyl. triple expansion engine, single shaft, 1 screw
power 349  n.h.p.
speed knots
yard no. 177
about the loss
cause lost torpedo
date lost 25/02/1944  [dd/mm/yyyy]
casualties  max.4998rank: 6
about people
Tyne Iron Shipbuilding Co. Ltd., Willington (N. & S. Shields)
engine by
Dickinson, John & Sons, Sunderland
last owner
[1]Imperial Japanese Navy - IJN - 大日本帝国海軍
Ryusei Maru (+1944)
period 1938 ~ 1944
prev. owners
[2]Gran Johan (Steamship Co. Cosmopolite Ltd. A/S), Bergen
SS Mabuhay II
period 1935 ~ 1938
[3]Østervold A/S D/S, Bergen
SS Havo
period 1911 ~ 1935
[4]Olsen Fred - Ganger Rolf A/S, Oslo (old Christiania)
SS Bra-Kar
period 1911 ~ 1916
about the wreck
depth (m.)
war grave
[1] Cressman R. J., Official Chronology of the U.S. Navy in WWII
[2]  history.navy.mil
entered by Lettens Jan
entered 01/11/2009
last update Allen Tony
last update 18/04/2013
Lettens Jan01/11/2009
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ref. used
 Cressman R. J., Official Chronology of the U.S. Navy in WWII
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Lettens Jan26/12/2010On February 25th 1944, US submarine Rasher (SS-269) sinks the Japanese army cargo ship Ryusei Maru, 07°55´S, 115°15´E and merchant cargo ship Tango Maru, 07°41´S, 115°10´E off the North coast of Bali.

Tango Maru was carrying 3.500 Javanese workers and hundreds of allied POWs, while Ryusei Maru was carrying 6.600 Japanese soldiers. 4,998 soldiers were killed on Ryusei Maru and over 3.500 prisoners of war on Tango Maru.
ref. used: 
 Cressman R. J., Official Chronology of the U.S. Navy in WWII
Lettens Jan26/12/2010On 25th February 1944, LtCdr Willard R. Laughon's USS RASHER (SS-269) intercepts a convoy consisting of RYUSEI MARU and TANGO MARU that is proceeding from Surabaya to Ambon escorted by minesweepers W-8 and W-11 and auxiliary subchaser TAKUNAN MARU No. 3.

RYUSEI MARU is carrying about 6600 men of various IJA units.

At 2045, Laughon torpedoes and sinks TANGO MARU about 25 miles N of Bali Island at 07-41N, 115-10E.

At 2225, Laughon sets up and fires four torpedoes at RYUSEI MARU. He gets three hits and she goes down at 07-55S, 115-15E taking 4,998 troops and crewmen with her.

At 0824, USN codebreakers intercept and decrypt a message that reads: "Subchaser No. 1 will proceed immediately to the position of the sinking of the RYUSEI MARU to rescue personnel.”
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About Builders
 Tyne Iron Shipbuilding Co. Ltd., Willington (N. & S. Shields)
A point of interest: the first 25 ships built by this company, without exception, were all lost at sea or wrecked. Of the first 50 ships built only 3 would see a full life of service and make it to the breakers yard.
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Ryusei Maru (+1944)
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