NEW HYBRID TUGS

Washburn & Doughty of East Boothbay, Maine is pleased to announce the launch and sea trials of two 93′ x 38′ Hybrid Z Drive Tugs. The 93′ x 38′ hull is a proven design with tugs in operation on the East Coast and Gulf Coast. The tugs are built as Harbor Assist Vessels as defined in USCG Subchapter M and admeasure less than 200 gross tons US regulatory tonnage. We are proud to have earned Harbor Docking and Towing’s business on this innovative project. The building of RALPH and CAPT ROBB has been a great working partnership and we are confident these two tugs will meet the high expectations we had at the outset of the project.

“These hybrid-powered tugs will provide more maneuverability over a pure propulsion design with added power when needed. At the same time, we expect greater fuel efficiency from a system that is environmentally-friendly. There is no downside.”
– John Buchanan, President, Harbor Docking and Towing

Caterpillar / Milton CAT Article
American Tugboat Review Article
Caterpillar / Milton CAT Article
American Tugboat Review Article

Tractor Tug Ralph

  • 6700 HP Hybrid Z-Drive Tug

  • 93′ x 38′ x 15.5′

  • Caterpillar Marine Hybrid Propulsion System

  • 2 Caterpillar 3512E main engines

  • Markey Hawser Winch, FiFi 1 Bollard pull of 80+ MT

More Information

Capt. Robb

  • 6700 HP Hybrid Z-Drive Tug

  • 93′ x 38′ x 15.5′

  • Caterpillar Marine Hybrid Propulsion System

  • 2 Caterpillar 3512E main engines

  • Markey Hawser Winch, FiFi 1 Bollard pull of 80+ MT

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