Mid-Coast Marine, Inc. (formerly Nelson Log Bronc) of Coos Bay, Ore., recently delivered its first 65-foot, twin-screw tugboat, the Andy Head (shown right), to Alaska Timber Corporation.
The new vessel will perform towing and ship-handling jobs for the ATC plant in Klawock, Alaska.
Designed by Jack Wilskey to meet American Bureau of Shipping and U.S. Coast Guard standards for structural strength and stability, the tug has a beam of 23 feet 10 inches and draft of 9 feet. The entire vessel is protected by extruded rubber "D" section fenders, plus extra protection on the bow to assist in the ship-docking process.
Main propulsion is provided by two Cummins KT2300M V-12 diesel engines equipped with air starting, driving 68-inch-diameter, four-bladed Coolidge propellers in Mid-Coast Marine nozzles through Twin Disc MG530, 6:1 reverse/reduction gears. Keel cooling for the main engines is provided by Fernstrum units.
Free-running speed on trials was 11 knots. The vessel has fuel capacity of 12,400 gallons and carries 3,000 gallons of fresh water.
Power and maneuverability in a small package are the prime characteristics of this heavy-duty workboat.
Engine and steering controls are provided at three locations.
Full follow-up hydraulic steering is installed, in association with a Sperry MK8 autopilot system.
Mathers air-operated engine controls are provided at the same locations — port and starboard in the pilothouse and at the aft tow winch station.
Electric power for the various engine room pumps and heating system is provided by two Lima 30-kw ac generators, driven at 1,200 rpm by GM Detroit Diesel Allison model 3-71 engines. A 12- volt battery starting system is provided for the auxiliaries, as well as for emergency lighting and radio power.
Staterooms for four crew members are located in the forecastle; the captain's stateroom is on the main deck. A spacious galley' dinette area on the port side of the main deck is fitted with electric range, r e f r i g e r a t o r , and freezer. A Microphor model M-30 marine sanitation system is installed to meet USCG regulations for effluent discharge.
The Andy Head is named after the grandson of Edward E. Head, founder and president of Alaska Timber Corporation.
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