The US Navy has accepted the delivery of the first of 25 tugs from Washington-based Modutech Marine.
Designated as Work Boat Medium, the first was delivered last month. The others will follow in regular deliveries through to December 2019.
The 9.1-metre by 4.5-metre vessels (with 1.6-metre draughts), were designed by Seattle-based naval architect firm Hockema and Whalen and Associates.
Powered by a pair of Cummins diesel engines each delivering 212kW continuous duty, they provide a 7.9-tonne bollard pull. Between jobs, the boats are capable of speeds up to nine knots.
On deck, a 181kg davit can be moved to port or starboard mounts as required.
A pair of Bloom deck winches are mounted forward, port and starboard to complement a pair of cheek blocks mounted alongside the pilothouse for making up to a barge with the push knees.
Wide side decks provide a safe workspace for the deckhand.
Heavy bollards are mounted on both sides for mooring and for working barges or other equipment on the hip.
The best maritime site on the web. The sea's our scene!