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Oceanographic Deck Machinery Subject Of Paper Presented At Pacific Northwest Section Shown at the Officer's Club in Seattle, left to right: Paul Zankich, vice chairman, Puget Sound Area, Pa- cific Northwest Section; John M. Trondsen, vice pres- ident, T & L Associates Inc., author; Gerald Talbot, chairman, P.N.W. Section, and William Dahlbeck, Pa- pers Committee chairman, P.N.W. Section. Approximately 80 members and guests of the Pacific Northwest Section of The Soci- ety of Naval Architects and Marine Engi- neers attended a regular meeting at Pier 91 Officer's Club, Seattle, Wash. After the dinner, a technical paper entitled "Oceanographic Deck Machinery" was pre- sented by John M. Trondsen, vice president, T & L Associates Inc., who furnished his au- dience with an excellent review of current oceanographic deck machinery, describing operational requirements, capabilities, design considerations and maintenance. The paper contained typical specifications for hydrographic and oceanographic winches and u-frames, a specific comparison of ma- rine deck cranes versus land cranes and a description of the design, purpose and ap- plication of fixed sheaves, flag blocks and hanging or gallows blocks. Winch design was also discussed, particularly the electro- hydraulic types using high-speed hydraulic motors connected to the drum through gear reducers alternatively low-speed high-torque hydraulic motors direct connected. Consid- erable emphasis was placed on the art of wire rope spooling, and grooved shells in- stalled on the drum are well advised when more than a few layers of cable have to be spooled. It was pointed out that the area of greatest change in oceanographic winches is in the control and monitoring systems which can now electronically provide for a multi- plicity of remotely controlled functions, in- cluding brake release, acceleration and de- celeration, tension, speed and horsepower limitations, direction sensing, etc. In conclusion, the author stressed the im- portance of oceanographic deck machinery being designed for operation on the open main or weather decks. Due to this exposure and an overlapping responsibility between the deck crew and engine room personnel, particular attention should be paid to deck machinery mainte- nance. Discussors were Robert A. Schelling and W.H. Etter. Copies of the paper can be obtained from the Section librarian. 1176' BIG BERTHA WANTS TO MEET YOU! Public Dry Dock No. 3, also known as BIG BERTHA in some ship repair circles, wants to meet you. 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Mass. 02109 (1-617-725-3344) A WIDE WORLD OF WOOD PRODUCTS excelling in specialty items for the marine trade • USCG approved pilot ladders • SOLAS and IMCO approved pilot ladders • Oval side pilot ladders • Boatswains chairs • Fids • Mallets • Serving boards • Rungs • Boat poles • Paddles, oars • Plugs • Wedges • Hatch boards • Riggers rollers • Heavy lift spreaders • Auto spreaders • Pallet spreaders • Pyrotechnic chests Prices and catalog upon request A. L. DON Company 58 Grant Avenue. Carteret. N.J. 07008 • 201-541-7880 Division of Steelstran Industries, Incorporated Crowley Environmental Services Named Exclusive Distributor For 40-Knot Pollution Control Vessel High speed and versatility are the key features of a new all-purpose/spill response vessel. A fiberglass and balsa-core workboat, the Raider SRV-1034 measures 34 feet by 10 feet, providing abundant cargo-carrying capacity at speeds up to 40 knots. The vessel was designed for operation in open seas, and features a shallow-draft hull design for operation close to shore. The Raider SRV-1034 is equipped with a bow ramp which can be lowered while in open water. This facilitates discharge of boom and other pollution-control materials. The ramp is also valuable as a beaching tool for on- and off-loading equipment and supplies, and for personnel movement. The Raider SRV-1034 measures 34 by 10 feet, is man- ufactured by Raider Marine Corporation, Anacortes, Wash., and is distributed exclusively by Crowley En- vironmental Services Corporation. More than 225 square feet of deck space is available for operating skimming and other pollution-control equipment. The Raider SRV-1034 can also be outfitted with acces- sory equipment such as cranes, winches or tripods to facilitate its use as a fishing boat, crewboat, diving boat or cargo lighter. The 6-foot by 6-foot pilothouse is optional, and can be located anywhere on deck. The Raider SRV-1034 is part of the Raider Marine Corporation "Beaver" Line of work- boats, and was developed in conjunction with Crowley Environmental Services Corpora- tion. Crowley Environmental Services, with offices throughout the West Coast and Alas- ka, is the exclusive distributor for the new craft. For further information and viewing, contact the Crowley Environmental Services office nearest you. AA/D -A STROA/G POSS/&/L/7-V OP RA/A/. MY CO/?// HURT'S. " 44 Maritime Reporter/Engineering News
