Master Boat Builders Launches Hybrid Tug

Master Boat Builders, Coden, Ala., announced November 12 that it has launched an electric-hybrid tug for Seabulk. Named Spartan, the tug is planned for a January 2022 delivery.

“Master Boat Builders is proud to launch this technologically advanced hybrid tugboat, which is the latest in a series of innovative and alternative-powered work boats that we are constructing as the maritime industry continues to modernize its fleet,” said Garrett Rice, president of Master Boat Builders. “With a collaborative design, engineering and building approach from the start, we were pleased to work with our partners to develop and build this new tugboat for Seabulk.”

The tug has overall length of 98 feet, beam of 43 feet and bollard pull of 90 tons. The integrated hybrid propulsion system was provided by Thompson Tractor and includes two EPA Tier 4 certified Caterpillar 3512E main engines, each producing 2,550 hp., and two Berg MTA 628 azimuth thrusters, three Caterpillar generators and two ABB propulsion motors and associated variable frequency drives.

The Spartan was designed by Robert Allan Naval Architects & Marine Engineers. The tug will be built to meet U.S. Coast Guard regulations and will be classed through the American Bureau of Shipping, including escort notation.

Established in 1979, Master Boat Builders has built and delivered about 430 vessels to customers all over the world.

Seabulk hybrid tug Spartan being launched at Master Boat Builders’ Coden, Ala., Shipyard. (Photo courtesy of Master Boat Builders)