Blount/Barker Shipbuilding launched a 55-ft. twin screw harbor tug on March 8 at the company’s shipyard in Warren, R.I.
Special features ordered by the purchaser, Tutor-Saliba/Koch/Tidewater JV of Sylmar, Calif., include push knee for towing jumbo barges. The vessel will be used in the seismic retrofit of the Richmond-San Rafael Bridge
in northern California
, which was damaged in a recent earthquake.
The twin screw tug is powered by two Caterpillar (CAT)
3412C diesel engines producing 615 hp at 1,800 rpm each. The four-bladed bronze wheels measure 50 by 55 in. and are connected to the main engines through Twin Disc MG-5170 reduction gears with a reduction radio of 4.5:1. All aspects of the design and construction were aimed at a heavily built, powerful tugboat with extra heavy belted construction, similar to the railroad tugs used in New York Harbor
The tug was scheduled for cross-country transit to its destination near San Francisco in early April. It will have its superstructure removed and be hoisted onto a trans-continental heavy truck carrier
, which will transport it over road from Rhode Island
to California. When it arrives there, the superstructure that was transported separately will be replaced and the vessel will be launched.