Tosa Maru (Stern Section) Wreck

Field Value
Wreck Category non-dangerous wreck
Tosa maru (stern section) Wreck Location
Marine Coordinates (DMM) 		1 11.211 N,103 50.036 E
Latitude, Longitude
Decimal Degrees
  • Latitude: 1.186850
  • Longitude: 103.833933
Wreck Depth 37 m
Water Depth 40 m
Water Level Effect always under water/submerged
Vertical Datum Approximate Lowest Astronomical Tide
Name TOSA MARU (STERN SECTION)
Type tanker
Flag JP
Length 235.9 m
Width 37.2 m
Draught 17.7
Tonnage 42790
Tonnage Type gross
Cargo ballast
Conspic Visual not visually conspicuous
Conspic Radar not radar conspicuous
Date Sunk Apr 18, 1975
Original Detection Year 1975
Last Detection Year 2023
Original Source Lloyd's and Marine Underwriter's reports
Surveying Details H1274/75 21.4.75 WK IN 011118N, 1035000E. STERN ON BOTTOM IN SHALLOW WATER WITH BOW ABOVE WATER. (LLOYDS VOL.220). H1274/75 6.5.75 HALF-SUBMERGED WK IN 011113N, 1035002E, TEMPORARILY MARKED BY G CONL LT BUOY, GPFL(3)G.10S, LAID 1.2C SE. (PSA NM 11/75T). - TNM 975/75 & NAVEAST 017/75 ISSUED. H1274/75 3.6.75 WK BUOY MOVED TO 011112N, 1035009E & 2ND G CONL LT BUOY, MO(U)G.10S, LAID IN 011115N, 1035000E. (PSA NM 13/75). - TNM 1178/75. H1274/75 28.7.75 SALVAGE OPS COMMENCED WITHIN 300MTR RADIUS OF WK. 1ST BUOY MOVED TO 011104N, 1035015E, 2ND BUOY UNCHANGED & 3RD G CONL LT BUOY, GPFL(3)G.15S ESTABLISHED IN 011106N, 1035002E. (PSA NM 22/75). - TNM 1655/75. H1274/75 12.9.75 REPEAT OF BA TNM 975/75. (BREST NM 75/33/32). H1274/75 1.10.75 DETAILS OF SALVAGE OPS. (SINGAPORE NM'S 26, 27 & 28/75). 1.10.75 FOREPART & MID-SECTION LIFTED & TOWED TO SISTERS, STERN SECTION STILL LYING SUBMERGED. (LLOYDS VOL.222). NCA. 17.10.75 WITH EFFECT FROM 19.9.1975, G CONL LT BUOY IN 011115N, 1035000E WILL BE MOVED TO 011120N, 1035009E. (LLOYDS VOL.222). H2519/73 29.1.76 WK BUOY IN 011106N, 1035002E WITHDRAWN. (PSA NM 46/75). NCA. H1274/75 22.4.76 WK REPD IN 011112N, 1034948E APPROX. (INDONESIAN NM 145/75). NCA. H1274/75 17.5.76 WK REPD APPARENTLY TO HAVE MOVED 2C IN DIRECTION 152DEGS. (SS 'ARDLINE' HN NO.2, DTD 23.4.76). NCA. H1274/75 21.6.76 WK BUOY IN 011115N, 1035000E WITHDRAWN. G CONL LT BUOY, GPFL(3)G.10S, MOVED 353DEGS, 400MTRS TO 011116N, 1035013E. (PSA NM 27/76). NCA. H1274/75 27.9.76 SALVAGE OPS EXPECTED TO RESUME SHORTLY. WK BUOY IN 011116N, 1035013E WILL BE REMOVED ON COMPLETION. (PSA TELEX DTD 27.9.76). - TNM 1925/76. H1274/75 31.1.77 SALVAGE OPS RESUMED 10.12.76, 2ND BUOY LAID IN 011108N, 1034954E. (PSA NMS 49(T) & 50(T)/76). 7.3.77 EXPLOSIVES USED TO SEPARATE FORE & MID-SECTIONS FROM STERN. REFLOATED SECTIONS TOWED TO BREAKERS YARD. STERN PORTION FURTHER BROKEN UP. ONLY A SECTION OF THE STERN REMAINS. NO LONGER CONSIDERED A NAVIGATIONAL HAZARD, WHERE IT LIES ON SEABED IN STRAIT OF SINGAPORE. (LLOYDS VOL.227) H1274/75 2.9.77 POST-SALVAGE SURVEY OF AREA RECEIVED INDICATING BUOYS STILL IN SITU 6.7.77, ON SURVEY [K5056/441], FOLIO ON LI(1). LETTER SENT TO HYDROGRAPHER PSA FOR CONFIRMATION. 20.9.77 WK HAS BEEN CLEARED TO A DEPTH OF 37MTRS & BUOYS REMOVED. (LLOYDS VOL.229). H1274/75 27.9.77 WK 37MTRS IN 011113N, 1035002E. MOST OF SUPERSTRUCTURE & HULL REMOVED. SMALL PORTION OF AFTER PART REMAINS. (PSA NM 20/77 & PSA LETTER DTD 9.9.77). - NM 2301/77. 11.1.82 POSN GIVEN AS 011113N, 1035008E [KEA] ON SURVEY [K5056/441]. NE 2556. 22.10.98 NOW CHARTED AS WK 38MTRS IN 011114N, 1035008E [KEA]. NE 2556. 8.4.99 NOW CHARTED AS WK 37MTRS. NE 2556. 24.1.01 WGD POSN: 0111.217N, 10350.033E. NE 2556. 10.11.01 NOW SHOWN IN 0111.235N, 10350.033E [WGD] ON SINGAPORE 4036 [DEC '01EDN, CO-PRODUCTION]. NC 4036. 5.7.07 SHOWN AS WK 37MTRS ON SINGAPORE DUAL BADGED 4036 [4TH EDN, LARGEST SCALE 1:10,000]. 24.7.08 SHOWN AS WK 38MTRS ON SINGAPORE DUAL BADGED 4040 & 4041 [5TH EDN, 2ND SCALES 1:30,000]. NE'S 4040 & 4041. RETAIN AS WK 37MTRS ON DATABASE UNTIL NE OF LARGER SCALE 4036 RECEIVED. 22.4.09 SHOWN AS WK 38MTRS IN 0111.220N, 10350.030E ON SINGAPORE DUAL BADGED 4036 [5TH EDN 2009, LARGEST SCALE 1:10,000]. NE 4036. 19.4.17 SHOWN AS WK 37MTRS IN 0111.220N, 10350.030E [WGD]. (MPA SINGAPORE DB CHART 4041, EDN 12, PUB 4.5.17). AMEND NDW 37MTRS. 24.4.17 SHOWN AS WK 37MTRS IN 0111.211N, 10350.037E [WGD]. (SINGAPORE DB 4036, EDN 9, DTD 6.4.17). MOVE TO REVISED POSN.
Last Amended Date Aug 21, 2023

Circumstances of loss

VESSEL, BUILT 1965 BY MITSUBISHI HEAVY INDUSTRIES LTD, NAGASAKI. OWNED AT TIME OF LOSS BY NIPPON YUSEN KAISHA. ON PASSAGE FROM YOKOHAMA FOR THE PERSIAN GULF. COLLIDED WITH LIBERIAN TANKER 'CACTUS QUEEN', LADEN WITH CRUDE OIL, IN THE VICINITY OF BUFFALO ROCK, SINGAPORE STRAIT. BOTH VESSELS CAUGHT FIRE. 'TOSA MARU' SANK AFTER EXPLOSIONS ON BOARD. LIES IN SHALLOW WATER INSIDE PORT OF SINGAPORE LIMITS. PARTIALLY REFLOATED, FORE & MID SECTIONS TOWED TO HONG KONG FOR SCRAPPING. ONLY LOWER PORTION OF STERN SECTION REMAINS. ALL 31 CREW RESCUED. (MSD).

WRECK MAP LOADING ... 1 11.211 N,103 50.036 E
Tosa Maru (Stern Section) on Wreck Map Tosa Maru (Stern Section) Wreck on Google Map

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FAQ

Where is the TOSA MARU (STERN SECTION) wreck located?

The TOSA MARU (STERN SECTION) wreck is located at coordinates 1 11.211 N,103 50.036 E.

How deep is the TOSA MARU (STERN SECTION) and where exactly is it located?

The TOSA MARU (STERN SECTION) lies at a depth of about 37 meters and is located at coordinates 1 11.211 N,103 50.036 E.

How deep is the seabed around the TOSA MARU (STERN SECTION)?

The seabed around the TOSA MARU (STERN SECTION) lies at approximately 40 meters deep.

When did the TOSA MARU (STERN SECTION) sink?

The TOSA MARU (STERN SECTION) sank on Apr 18, 1975.

When was the wreck of the TOSA MARU (STERN SECTION) discovered?

The wreck of the TOSA MARU (STERN SECTION) was discovered in 1975.

What country did the TOSA MARU (STERN SECTION) belong to?

The TOSA MARU (STERN SECTION) belonged to JP.

What cargo was the TOSA MARU (STERN SECTION) carrying?

The TOSA MARU (STERN SECTION) was carrying ballast.

What was the tonnage of the TOSA MARU (STERN SECTION)?

The TOSA MARU (STERN SECTION) had a tonnage of 42790 tons.

What type of wreck is the TOSA MARU (STERN SECTION)?

The TOSA MARU (STERN SECTION) is classified as a tanker.

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