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Mission San Miguel
See also : Construction photos "Mission San Miguel"

T2-SE-A2
Mission Buenaventura Class Fleet Oiler:
Laid down, 11 August 1943, as a Maritime Commission type (T2-SE-A2) tanker hull,
under a Maritime Commission contract at Marinship, Sausalito, CA;
Launched, 31 October 1943;
Delivered to the WSA, 19 February 1944 for charter to Pacific Tankers, Inc.;
Returned to the Maritime Commission, 20 May 1946, for lay up in the National Defense Reserve Fleet, Mobile, AL.;
Acquired by Navy, 4 November 1947, and assigned to the Naval Transportation Service as Mission San Miguel (T-AO-129)
to be operated under a charter by American Pacific Steamship Co.;
Operational control transferred to the Military Sea Transportation Service, 1 October 1949;
Redesignated USNS Mission San Miguel (T-AO-129);
Placed out of service, 22 March 1950;
Laid up in the Pacific Reserve Fleet, San Diego, CA.;
Placed in service, 24 July 1950 under MSTS control as Mission San Miguel (T-AO-129);
Placed out of service, 28 May 1954, and laid up in the Pacific Reserve Fleet, San Diego;
Reactived and assigned to MSTS, 1 November 1956;
Ran aground, 8 October 1957, on Maro Reef, Hawaiian Islands.
Final Disposition, declared unfit for further naval service or salvage;
Struck from the Naval Register, 20 December 1957.
Specifica( See photo below )tio
AO Specifications:
nDisplacement 5,532 t(lt) 21,880 t.(fl);
Length 524';
Beam 68';
Draft 30' (max);
Speed 16.5 kts;
Complement 52 civilian mariners;
Propulsion, Turbo-electric, single screw, 6000hp.

View the Mission San Miguel (T-AO-129)
DANFS history entry located at NavSource.

The Miramar Ship Index for "MISSION SAN MIGUEL"
IDNo:
2244739
Year:
1944
Name:
MISSION SAN MIGUEL
Keel:
11.08.1943
Type:
Tanker
Launch Date:
31.10.1943
Flag:
USA
Date of completion:
19.02.1943

Tons:
10461
Link:
-
DWT:
16613
Yard No:
30
Length overall:
159.6
Ship Design:
T2-SE-A2
LPP:
153.3
Country of build:
USA
Beam:
20.7
Builder:
Marinship Corp.
Material of build:
Location of yard:
Sausalito
Number of screws/Mchy/Speed(kn):
1TE-16

Subsequent History:
-

Disposal Data:
Wrecked Laysan Reef, 775 nm NW Hawaii 9.10.1957 [ Voyage Guam-Seattle, in ballast ]

History:
ON
LR/IMO
ID
Year
Name
Tons
Change
Registered Owner
244739
2244739
1944
MISSION SAN MIGUEL
10461
U.S. Govt.
AO-129
2244739
1944
MISSION SAN MIGUEL
10461
1947
U.S. Navy

 SS Mission San Miguel launching and Christening ceremony, 31 October 1943, Marinship, Sausalito, CA.
( Photo thnaks to Leo Bangsund )
USNS "Mission San Miguel", place and date unknown.

Casualty Narrative
“The USNS Mission San Miguel, a T-2 type tanker of 10,461 gross tons, built in 1944, owned by the U.S. Navy, civilian manned and operated in the Military Sea Transportation Service, departed Guam, M. I. in ballast, on 1 October 1957 bound for Seattle, Washington, under U.S. Navy sailing orders which included positions to be traversed along a track passing through the Hawaiian Archipelago about 23 miles south of Maro Reef. In the evening of October 8 while proceeding at full speed - about 15 knots -weather overcast with rain squalls, the vessel struck this reef, piercing her bottom. Because of jammed valves, the cargo pumps were unusable to counteract the progressive flooding which followed through failure of pump room, engine room and cargo space bulkheads previously weakened by extensive wastage. On 10 October all personnel were removed by other U.S. Navy ships without injury or loss of life. The vessel valued at $2,000,000 was abandoned as a total loss.”

Casualty Information
Port Departed: Apra Harbor, Guam Destination Port: Seattle, WA
Date Departed: October 1, 1957 Date Lost: October 5, 1957
Number of Days Sailing: ˜ 5 Cause of Sinking: Grounding
Latitude (DD): 25.37167 Longitude (DD): -170.5683
Nautical Miles to Shore: 1 Nautical Miles to NMS: 0
Nautical Miles to MPA: 0 Nautical Miles to Fisheries: Unknown
Approximate Water Depth (Ft): 30 Bottom Type: Coral reef
Is There a Wreck at This Location? No, the wreck has not been relocated, it may have drifted into deeper water as it broke apart
Wreck Orientation: Unknown
Vessel Armament: None
Cargo Carried when Lost: Seawater ballast  
Cargo Oil Carried (bbl): 0 Cargo Oil Type: N/A
Probable Fuel Oil Remaining (bbl): = 14,500 Fuel Type: Medium Fuel Oil (Diesel)
Total Oil Carried (bbl): = 14,500 Dangerous Cargo or Munitions: No
Munitions Carried: None
Demolished after Sinking: No Salvaged: No
Cargo Lost: N/A Reportedly Leaking: No
Historically Significant: Yes (one of last T2-SE-A2 tankers left) Gravesite: No
Salvage Owner: Not known if any Section 1: Vessel Background Information: Remediation of Underwater Legacy Environment

 USNS "Mission San Miguel", stranded on Maro Reef, Hawaii, on or after 8 Oct 1957. She is stuck fast and breaking up.
The vessels 45 man crew fought for more than 24 hours to the ship, but removed after it became apparent their efforts were futile.
( United Press Telephoto of 12 October 1957 from a US Navy photo )