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Furuno Introduces New Digiscan Radars —Literature Available Furuno announces a new family of modest cost, high performance radars that combine the most ad- vanced technical features with tra- ditional Furuno quality and reliabil- ity. The Furuno FR-800D Digiscan radars have a high brightness, steady picture 12 inch CRT: range scales from % to 36, 48 or 72 nautical miles; output power to 10 kw; anten- na lengths from 3 to 8 feet; plus a whole variety of standard built-ins like variable pulselength and PRF's, sea and rain clutter controls, inter- ference rejector, target plot with six selectable intervals, dual variable range markers, dual electronic bear- ing lines, adjustable sector and range guard zone with alarm, uni- versal 10.2-40 VDC power supply. Furuno's custom hybrid micro- wave IC circuitry lets the equipment perform like other radars needing twice the output power, while re- ducing routine maintenance re- quirements. The Digiscan advan- tage is the way signal processing is done. Most existing digital, or "raster- scan," radars use single-level quan- tization. That is, the returning echo is either present or not present, either "on" or "off". Where the tar- DISCOVER THE SELF-CLEANING CENTRIFUGE Mitsubishi's Compact and Economical SJ-700 & SJ-700S will Solve Your Purifying Needs For your Towboats, Tugs, Workboats, Supplyboats, Fishing boats and any Marine Power Plants "4. M/V GULF FLEET NO. 74 armed with SJ-700 • Best selling Mitsubishi oil purifiers • With automatic sludge discharge mechanism • Highest efficiency to remove harmful contaminants & water from oil • Keep your fuel oil & lube oil clean and preserve your engine life • Reduce your maintenance and save your running costs MITSUBISHI OIL PURIFIERS are available from 100 gph to 3,000 gph for Solid bowl & Self-cleaning types Throughput Capacities (gph) Oil Diesel Hydraulic Lube Oil Model \ Oil Oil (Detergent) SJ-700 200 200 140 SJ-700S 130 130 100 Maximum specific gravity of oil: 0 980/1 5 C | "See us at Fish Expo '84 — Booth 517" | Call local distributors below for details: U.S.A.-Louisiana, Massachusetts, Westwego, Wrentham, Diesel Power Sanborn Associates, Inc. Int'l Sales Inc. (617)384-3181 (504) 436-9510 Washington, California, Seattle, Emeryville, Hatch & Kirk Inc. The Charles Lowe (206) 783-2766 Company (415) 653-8236 Canada-B.C., Richmond, BSD Engineering sales (604) 273-9481 Nova Scotia, Dartmouth, Cullen Canadian Inc. (902) 463-6200 MITSUBISHI KAKOKI KAISHA LTD. Mita Kokusai Bldg. 4-28, Mita 1-chome Minato-ku, Tokyo 108, Japan Tel: (03) 454-4811 Telex: J22624 A MITSUBISHI INTERNATIONAL CORPORATION 520 Madison Avenue, New York, N.Y. 10022 Tel: (212) 605-2634 Telex: 420368 get is weak, or there is heavy precip- itation or high seas, there's a chance that important targets may not quite reach a level that is recognized as "present" on the radar. Even seemingly solid targets like a harbor entrance through a breakwater can- not be seen because of "holes" on the screen caused by the system not being sure of whether or not a target is there. Furuno's Digiscan system recog- nizes several levels of target re- turn—weak, medium, strong—even in heavy weather. This produces an exceptionally clear radar presenta- tion with all the brightness and pic- ture steadiness one could want. For literature containing full in- formation on Furuno's Digiscan Ra- dars, Circle 69 on Reader Service Card Northern New England ASNE Announces New Officers For 84-85 Season The Northern New England Sec- tion of the American Society of Naval Engineers has announced its slate of officers for the forthcoming 1984-85 season as follows: chairman, Cdr. John B. Cavender, USN; vice chairman, Capt. Rodney K. Watterson, USN; treasurer, Ger- ald J. Gouveia; secretary, Terry K. Hardy; councilman (3 years), Capt. John A. Culver, USNR; councilman (2 years), Cdr. Nor- man K. Berge, USN (Ret.); coun- cilman (1 year), Philip V. John- son. Rolls-Royce Gets Contract For Gas Turbines To Power Dutch Frigates A contract worth about $17 mil- lion was signed recently in the Netherlands between Rolls-Royce and the Dutch shipbuilder Royal Shelde for the supply of Marine Spey gas turbines to be manufac- tured at Rolls-Royce's Coventry, England, plant. The engines are for a new class of multipurpose (M) fri- gates for the Royal Netherlands Navy. The contract follows an an- nouncement made earlier this year by the British and Dutch Defense Procurement Ministers of an Anglo/ Dutch agreement to order Marine Spey units to power the M frigate. Since 1972, Rolls-Royce has sup- plied 56 marine gas turbines for installation in 14 Royal Netherlands Navy frigates and destroyers, as well as others for corvettes and frigates exported from Holland to Greece and Indonesia. This latest order in- creases the number of Marine Speys ordered by British, Japanese, and Dutch navies, for five classes of war- ships, to a total of 57. The Marine Spey is Rolls-Royce's latest marine gas turbine engine, following the highly successful Olympus and Tyne units. It devel- ops 24,000 hp, with a thermal effi- ciency of 37 percent. For additional information on Rolls-Royce gas turbines, Circle 67 on Reader Service Card Circle 219 on Reader Service Card 66 Maritime Reporter/Engineering News
