Utility Vessel And Tugboat Delivered By Service Machine Group

Two new workboats — the offshore utility vessel PBR-216 and the tug Stone Mountain — were completed recently by The Service Machine Group, Inc. of Morgan City, La.

The PBR-216, built for PBR Offshore, Inc. also of Morgan City, has an overall length of 118 feet, beam of 26 feet, depth of 11.5 feet and draft of 10 feet. Cargo water capacity is 58,000 gallons, fuel oil capacity is 30,000 gallons, and deck cargo load is 103 tons, with additional below-deck capacity of 217 tons.

She is powered by two General Motors 16V-92N diesel engines with a total of 1,200 bhp, supplied by George Engine Company, driving Twin Disc 5:1 reduction gears for a speed of 12 knots.

Electric power is provided by two GM4-71N engines driving 50-kw generators.

Additional equipment includes a Sitex Model 22 radar, a Motorola 55/75 VHF radio, a Drake TRM-115 SSB radio, an SRD Model CLX Loran, and a Datamarine Model 2650 depth finder.

The PBR-216 is the first of six sister vessels being built for the same owner. Service Machine will deliver the remaining five during 1980.

The second recent delivery was the tugboat Stone Mountain, built for Black Towing Company of Morgan City. The 75-foot vessel has a free-running speed of about 12 knots, provided by twin GM- 16V-92N diesels driving 64-inch bronze propellers supplied by Rice Propellers through Twin Disc 5:1 reduction gearing.

A Smatco towing/anchor handling winch provides a line pull of 50,000 pounds. Skipper, Inc.

provided the hydraulic steering units, two air compressors came f r o m Quincy, and the Barnes bilge/ballast/fire pump and the sanitary and potable water pressure sets were supplied by Pump Systems, Inc.

Electronic gear in the Stone Mountain i n c l u d e S i t e x radar, Drake SSB radio, two Motorola VHF radios, Datamarine depth finder, and T e x a s I n s t r u m e nt computer-controlled Loran.

Maritime Reporter Magazine, page 10,  May 1980

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