On June 4, the 92-foot tug James R. Moran slid out of its building shed and down the ways at Washburn & Doughty in East Boothbay, Maine. It’s the 10th 92-foot tug that Washburn & Doughty has built for Moran Towing Corp., New Canaan, Conn. The James R. Moran will be delivered in July and used for ship-assist work with LNG tankers that call at Chesapeake Bay’s Cove Point, Md., LNG storage terminal.
After the Moran tug was launched, the East Boothbay boatyard continued work on a 92-footer for the Providence Steamboat Co., Providence, R.I. Providence Steamboat operates its tugs mostly in Rhode Island’s Narragansett Bay.
This is the first tug that Washburn & Doughty has built for the company. It’s also the first Z-drive for a Providence Steamboat tug and the first boat that Washburn & Doughty has built with a new-generation Z-drive from Rolls-Royce. “Rolls-Royce bought out Ulstein and Aquamaster and tried to take the best features and combine them in a single unit,” said Bruce Washburn, the boatyard’s naval architect and vice president.
The two Z-drives going into the tug will be Rolls-Royce Aquamaster US 205s with 90.5” propellers inside Kort nozzles lined with stainless steel. A pair of 2,500-hp Caterpillar 3516HD diesels will power the Z-drives.
On the forward deck will be a Timberland A180-1-60 EVC electric hawser winch with level-wind and line-rendering capability. An Almon Johnson 18”-dia. series 351E capstan will be on the aft deck.
The tug will be delivered in December and used for ship-assist work. It’s the 15th 92-footer built by Washburn & Doughty. It’s a size that obviously has been popular, but Washburn said that there has been discussions about designing and building a 98-foot tug for both ship-assist and escort work.
Washburn & Doughty’s most recent 92-footers have escort ratings, but Washburn said the 98-foot design is for companies that have “more robust escorting.”
Developing a design for a larger tug is being approached incrementally, because, Washburn said, one thing that has to be avoided is a boat that’s too big for docking. The 98-foot design “is a good compromise for docking and where robust escorting is required.”