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Artist's rendering of 225-foot tug/supply vessel now under construction at Marystown Shipyard in Newfoundland, Canada. Of the yard's own design, the ship will be powered by four Deutz diesel engines in a unique "father and son" arrangement with a total output of 12,860 bhp at 900 rpm. Marystown Shipyard Building 225-Foot Deutz-Powered Tug/Supply Vessel During the past year, Marystown Shipyard Limited in Newfound- land, Canada, has been developing an all-purpose anchor-handling/ tug/supply vessel design designated the M68 (LOA is 68.48 meters), capable of being fitted out with a number of options to suit almost any requirements for the various charter requirements worldwide. The Marystown board of direc- tors recently decided, after investi- gating worldwide supply ship re- quirements, to build one of these vessels for its own account, with the view to obtaining an owner before completion. Designated Hull 37, the vessel will be built to Lloyd's Regis- ter of Shipping classification + 100A1, Offshore Tug/Supply Ship, Ice Class 3, Deck Cargo (5 tons per square meter), +LMS, UMS, Unrestricted Service, Oil Recovery. Hull 37 will have an overall length of 224.67 feet, beam of 49.21 feet, depth to main deck of 23.79 feet, and design draft of 18 feet. The ves- sel will be capable of discharging potable water, drill water, fuel oil, liquid mud, and two types of bulk cargo simultaneously to the highest existing drilling platform, and will also be capable of transhipping re- claimed oil in emergency spill condi- tions. The vessel will be powered entire- ly by four Deutz diesel engines in a unique "father and son" installation with a total of 12,860 bhp at 900 rpm. The propulsion plant com- prises two Deutz SBV 16M 628 engines, each with an output of 4,150 bhp at 900 rpm, and two SBV 9M 628 engines, each producing 2,280 bhp at 900 rpm. These will drive two lips controllable-pitch propellers in fixed nozzles at 180 rpm, via two twin-input, single-out- put reduction gearboxes, each rated for 6,430 bhp. Each gearbox will be provided with two power take-offs, one to drive the 1,400-kva alternator and one to serve future installation of a 2,400-hp fire-fighting pump. The entire Deutz propulsion pack- age is arranged to provide maximum fuel efficiency, with ideal top-end power potential. One Ulstein 800-hp bow thruster and one 600-hp stern thruster will be installed. Deck machinery will include one heavy-duty, fully enclosed, hydrau- lic anchor-handling/towing winch with a maximum pull of 300 tons and static rating of 350 tons. Other deck gear comprises twin cable lift- ers, two 12-ton tugger winches, two 10-ton capstans, two double-drum wire storage reels, one set of towing pins, and one set of anchor-handling tongs. Navigation and communications systems will include: Simrad 100 au- tomatic direction finder and ED161 navigation sounder; JRC speed log type JLN203, and JMA 510 and -JMA 630 radars; two Sailor RT 144C VHF radiotelephone; two Aerial view of Marystown Shipyard, (below left), located on southern coast of Newfoundland. Yard is equipped with Syncrolift marine elevator with side transfer system. 14 Maritime Reporter/Engineering News
