Halter Marine, Inc., New Orleans, La., was recently awarded a contract by Pelham Marine, Inc., also of New Orleans, to construct a 180-foot supply boat. The contract will bring to an even dozen the number of Halter-built boats to operate under the Pelham flag.

The vessel will be powered by two Caterpillar D399 diesel engines and will operate in the Gulf of Mexico. It will be built by Halter's Moss Point, Miss., division and is scheduled for completion in December 1982.

Halter Marine, Inc. is the world's largest builder of supply boats for the offshore oil and gas industry.