In early November, Master Boat Builders Inc. launched the 98'x43' electric-hybrid tug Spartan. Delivery of the tug, built at MBB’s Coden, Ala., yard for Seabulk, is planned for January 2022.

The technologically advanced hybrid tugboat Spartan "is the latest in a series of innovative and alternative-powered workboats that we are constructing as the maritime industry continues to modernize its fleet,” Garrett Rice, president of Master Boat Builders, said in a statement announcing the launch. “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 was designed by Robert Allan Ltd., Vancouver, British Columbia. The tug is being built to meet USCG regulations and will be classed through the American Bureau of Shipping, including escort notation.

The vessel has a 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.

“We are pleased to welcome the Spartan hybrid tugboat to our fleet. She represents both the excellent workmanship of Master Boat Builders and Seabulk’s steadfast commitment to improving the sustainability of its operations through technological advancement,” said Daniel Thorogood, chief executive officer of Seabulk. “She is the first of two purpose-built diesel-electric hybrid vessels commissioned to reduce our future carbon emissions.”