MS Transpet

MS Transpet was a tanker of United States and Panamanian registry.

Construction
She was ordered by the United States Maritime Commission as MS Avoca however, while still under construction at St. Johns River Shipbuilding, Jacksonville, she was reassigned to the United States Navy under a loan charter and renamed Petaluma (AOG-69)

Petaluma was launched on 5 May 1945, and was about 85% complete when, due to the end of World War II, the ship's U.S. Navy reassignment was canceled on 26 August 1945. Although initially restored to her original name of Avoca by her original owners, the unfinished ship was completed by the Maryland Drydock Company in Baltimore, Maryland, in October 1947 and sold to the National Petroleum Transport Corporation where she was renamed Transpet.

Career
From 1947 until 1951, Transpet flew the U.S. flag. In 1951 Transpet was registered under the Panamanian flag and placed under the operation of D.K. Ludwig of New York for the British American Oil Company.

On 29 October 1951 the tanker departed Montreal for Halifax loaded with 1500000 impgal of gasoline and kerosene. The following day, the ship suffered an explosion in the engine room while in the Gulf of St. Lawrence. Two seamen were killed in the blast; the other eighteen members of the crew abandoned the sinking ship and were rescued by the British ship Ottinge and landed at North Sydney, Nova Scotia.

In May 1954, the Minneapolis-Honeywell Regulator Company announced that its "sea scanar" device had located the wreck of Transpet at a depth of 120 ft about 13 nmi off Miscou Island. It was the first time the "sea scanar", which had been in use as a fish finder off the West Coast of the United States, had been used in a salvage operation and the first wreck located using it.