Marine Petroleum Trust, through its subsidiary, Marine Petroleum Corporation, operates as a royalty trust in the United States. As of September 19, 2012, Marine had an overriding royalty interest in 58 oil and natural gas leases covering approximately 217,056 gross acres located in the Central and Western areas of the Gulf of Mexico, off the coasts of Louisiana and Texas. Marine Petroleum Trust was founded in 1956 and is based in Dallas, Texas.