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control of thrust and direction. The propellers are enclosed in nozzles to further enhance the bollard pull of the vessel. The Schottel rudder-propeller system produces a high degree of maneuverability and power that provides substantially increased economy and safety for the new tug- boat. This advanced tractor tug de- sign, though common in most of the modern European and Far East ports, is the first placed in service on the U.S. East Coast, according to company president Brian A. McAllister. The Schottel Rudderpropeller is the nucleus of the Schottel propul- sion system. Developed more than 30 years ago, it created completely new possibilities in the design and maneuvering capabilities of modern harbor and seagoing tugboats. The Schottel system transforms engine output into optimum thrust by use of specially designed gears and a proportional propeller. Full thrust is provided to move the tug almost instantly in any direction by rotating the lower gearbox, without power loss, and with maximum ma- neuvering capability at full power ahead, astern and laterally. Turning circles and stopping distances at full power can be executed in approxi- mately one tug length. Power is transmitted by the Schottel Rudderpropeller through silent-running, spiral-bevel gears; packing seals are fitted throughout. Fixed or controllable-pitch propel- lers are of the push-type, designed to suit the individual vessel. For tugboat propulsion, most of the units are fitted with nozzles to in- crease thrust. Schottel Rudderpro- pellers are available in a power range from 27 to 6,000 horsepower. Fast, single-lever fingertip control is provided by two separate direct- follow-up electrohydraulic steering systems. The 4,300-bhp Brooks K. has BROOKS K. MCALLISTER Major Suppliers Main engine (2) . .GM-EMD 16-645 E2 Engine monitoring . . . Tracor Marcon Silencers . . . Reiley Beaird (Maxim) Steering system, Rudderpropellers, clutches & shafting . . . . Schottel Generators Detroit Air compressor . . . Quincy Fuel pumps . . . Oberdorfer Bilge, ballast & fire pumps Peabody-Barnes Air conditioning . . . Carrier Engine room ventilation . . . . Hartzell Sanitation system . . . Microphor Potable water pump . . . .Tate Andale Water heater .... . Bradford-White Switchboard, main power distribution & navigation panels . . Power Panels Lighting Aqua-Signal/Pauluhn/Phoenix Electrical cable . . . . . . . Gaubert Radar Furuno VHP radios ICOM Loudhailer/horn . . . . . . . Raytheon Depth recorder . . . . . .Datamarine Rectifier . . . . Newmar Batteries . . . . Tiger Glo Battery chargers . . . .LaMarche Hatches, portlights & WT doors Centrex Marine Windows . . . . Kearfott Bumpers & fenders . M&M Bumpers (Hughes Bros.) Coatings Sigma Life saving equipment . . . . Jim Buoy been joined in the Florida port by two 2,400-bhp tugs, the Dee Dee McAllister and the Danielle McAl- lister, and additional boats are planned for the new service. For complete literature on the Schottel Rudder propeller system, Circle 7 on Reader Service Card For more information on the com- plete towing services offered by McAllister Brothers, Circle 8 on Reader Service Card Yost Nominated To Be Next Commandant Of U.S. Coast Guard Vice Adm. Paul A. Yost has been nominated by President Rea- gan to become the next comman- dant of the U.S. Coast Guard. Fol- lowing Senate confirmation, he will replace Adm. James S. Gracey who will retire nn May 30 after four years as head of the service. Admiral Yost, is a 1951 graduate of the Coast Guard Academy who has been serving as Commander of the Atlantic District. Secretary of Transportation Elizabeth H. Dole, whose department has juris- diction over the Coast Guard, said the 35-year veteran has "served with distinction" in a wide variety of assignments both in Korea and Vietnam; he was decorated in both theaters. Circle 234 on Reader Service Card May, 1986 25 milt Will you be ready for the new pollution regulations? By October 2nd, all ships must comply with the new I.M.O. regulations controlling the discharge of oil in the sea. Most ships will now have to fit an oily water separator. So fit the best - the Hamworthy unit - backed by the reputation ot the world's leading manufacturer of marine pollution control equipment. When you compare the Hamworthy separator with others, you will see that it's less complex, more compact, and doesn't have expensive filters needing continual replacement. There are 3 models with capacities up to 5 tonnes per hour, and all are fully automatic with fail-safe devices. They come as a complete module requiring only electrical and inlet/outlet connections. Naturally they are I.M.O. and U.S. Coastguard approved. Send for further details, today. Time is getting short!
