Two Detroit-Powered Tugboats Completed By Manly Shipyards

John Manly Shipyards, a division of Riv- Tow Shipyards Ltd., recently delivered two tugboats to RivTow Straits Ltd., the second largest towing company in British Columbia, Canada. The new vessels have joined RivTow's fleet of 75 tugs, 175 barges, and 75 small boom boats.

The RivTow Spirit is a 64-foot 9-inch shallow-draft tug to be used at the Port of Prince Rupert. The Mclllwain-designed tug has a beam of 24 feet, a river draft of 8 feet, and an ocean draft of 9 feet 4 inches.

She is powered by two Detroit Diesel 16V71 engines, each producing 490 bhp at 1,800 rpm, driving twin Western propellers in Kort nozzles through Twin Disc 567 reduction gears.

The Westminster Chinook is a 53-foot ship-docking and barge-handling vessel to be used in the Port of New Westminster. She has a molded beam of 23 feet 6 inches and a draft of 10 feet 9 inches. Her power package is identical to the RivTow Spirit.

Both vessels comply with all applicable Canadian Steamship Inspection requirements and with Workers' Compensation Board regulations.

Both have extensive sound-dampening and vibration-reducing systems providing very comfortable decibel levels. Most interesting is the sound and vibration reduction achieved in the Chinook's wheelhouse by isolating the entire structure on pedestal mounts.

Steering systems for both vessels was provided by Wagner; electrical power is supplied by Detroit Diesel 4-71 generators. All closures are standard Manly windows, doors, and hatches. Life rafts are by Beaufort.

Maritime Reporter Magazine, page 58,  Feb 15, 1981

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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.