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indicated that information on all 38 ports is scheduled to be on-line by next year). Mr. Danley said ECDIS will prove invaluable in keeping the shipping lanes open, pointing out that when visibility is traditionally poor around the Great Lakes during the autumn, an ECDIS system can be used to successfully navigate through the bad weather and through the locks. One test data set has been pro- vided to the Lake Carriers Association in the Great Lakes. The data set covers the St. Marys River from DeTour Passage to Sault Ste. Marie, and will be used this spring by lake carriers tran- siting the St. Marys River. ECDIS: Setting the Standard While there are many valuable electronic charting products and systems available to the market, ECDIS is the only system which will allow for the complete replace- ment of paper charts, thus elimi- Terms ECDIS Electronic Chart Display and Information System ECHO European Chart Hub Operations RCDS Raster Chart Display System GRT Gross Registered Tonnage GPS Global Positioning System DGPS Differential Global Positioning System IHO International Hydrographic Organization S57 IHO's transfer standard for digital hydro graphic data DX90 Exchange format for S57 IEC International Electrotechnical Committee IMO International Maritime Organization SOLAS International Convention of the Safety of Life at Sea ARCS Admiralty Raster Chart Service RENC Regional Electronic Navigational Chart Coordinating Center nating a costly and time-consum- ing chore. Of all of the electronic systems available, ECDIS is wide- ly considered the most advanced, and hence, costliest. For a system to have the designation of ECDIS, it must fulfill all of the require- ments laid down by the IMO's "IMO Performance Standards for ECDIS." To date, the Electronic Chart Display and Information System (ECDIS) is the only type of elec- tronic charting system approved by the International Maritime Organization (IMO) for the replacement of paper charts, which is an important disctinction. (Final approval is due in the spring by IMO and IHO of S57, version 3.0; equipment type approvals are expected in the fall). (Continued on page 62) EMERGE! T0WIN< 100 - 200 TON (IMO 3563) 50 TON (save on insurance!) D-Box system: • Competitive price • No maintenance • From stock • Compact size Approvals: • ABS • DNV • Lloyd's • GL • Washington St For information and dealers: Leenstra W t'RKIUIGHOll W K U N V ! (, Leenstra Machine- en Staalbouw B.V. P.O. Box 9, NL-9200 AA Drachten, Netherlands. Tel.: +31-512-589700, Fax: +31-512-510708. Circle 260 on Reader Service Card ANCHORS CHAINS Va" up to 41/2", U2/U3 from STOCK! G. J. Wortelboer jr. B.V. P.O. Box 5003 3008 AA Rotterdam, Nederland Tel.: 31 10 4292222 Fax.: 31 10 4296459 Telex: 28393 GJWNL WORTELBOER \our Ship Should Work As Hard As You Do (juido Perla & Associates has been designing profitable working vessels since 1979. A full-service naval architecture, marine engineering, and project management firm, GPA has extensive experience in design and construction of a variety of vessels. Working vessel experience includes all types of fishing vessels (including the largest factory trawler in the United States), offshore supply and anchor handling vessels, escort and harbor tugs. Our support of shipyard construction means that we stay with you during the entire design and build process. Make sure you get the most from your new vessel, modification or conversion. • Full range of naval architecture, marine, and electrical engineering design • Shipyard construction engineering and support • Project management and owner representation • Technical consulting and operations support • Regulatory agency liaison April, 1998 Circle 232 on Reader Service Card Circle 237 on Reader Service Card 59