Mid-Coast Delivers Cummins-Powered Crabber-Tender

Mid-Coast Marine recently delivered the 88-foot combination crabber- tender Controller Bay, designed for Southeast Alaska. The new Mid- Coast boat was designed and built for Dick Miller and Dennis Freed of Seattle. Her length overall is 88 feet 2 inches, beam 25 feet 8 inches and molded depth is 12 feet 4 inches.

The main engine, 800 hp 1,800 rpm, is a Cummins KT 38M with a Twin Disc MG 530 marine gear at 4.94:1. The intermediate shaft at 4- 1/2 inches diameter and tail shaft at 5 inches diameter are both Aquamet 17 stainless steel running through a Cooper split-type roller bearing.

West Coast Propeller provided the four-blade 79-inch bronze propeller.

The long list of auxiliary equipment is headed up by the main auxiliary generator set, which is a Cummins NT 855, 320 hp continuous, fitted with a Lima 175-kw generator on the back end and twin double Dennison hydraulic pumps on the front, driven by a Twin Disc twopump drive. The number two generator set is a Cummins N855 with a Lima 100-kw generator and an identical pump set to the #1 generator.

In addition to the large generators, a 30-kw Isuzu light plant was installed.

All four engines are cooled by Fernstrum grid coolers and the exhaust is handled by Harco mufflers.

The engine room is protected by a manual Halon fire suppression system with automatic engine and vent fan shutdowns. As for E.R. ventilation, a 3,600 CFM tube axial fan does the job of keeping the engine room air fresh and cool. For pumps, the vessel was equipped with two 1- 1/2-inch bilge pumps, one electric, and one engine driven, a 15-gpm positive displacement fuel transfer pump, a crab pot washer pump, and two crane Demming 20 hp 4360-M5 RSW/crab circulation pumps 1,200 gpm each. To cool the seawater for RSW, PSER Inc. supplied a 40-hp Carrier refrigeration system with 60 tons capacity, plumbed through a galvanized box-type chiller.

Back outside on the deck, the boat was outfitted with a Slattery MCK 630 six-ton knuckle/squirt deck crane capable of reaching any point on deck and then some. The anchor winch is a Thompson 3224 fitted with 600 feet of 3/4-inch galvanized wire, one shot of 1-inch galvanized chain and a 900-pound Stockless bow roller. Other deck gear included a Marco JO 117 crab pothauler on a Mid-Coast Marine articulated davit and a Hansen king crab pot launcher.

As far as other work going on at Mid-Coast, the yard is presently pulling plate on a new 72-foot crabber for Joe Merino of Westport, Wash. In addition, the 170-foot longliner Yukon Queen is on the dry- dock being assisted in a major processing conversion.

For free literature giving full information on the facilities and capabilities of Mid-Coast Marine Circle 58 on Reader Service Card

Maritime Reporter Magazine, page 50,  May 1989

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.