Page 64: of Maritime Reporter Magazine (February 1994)

mRRinER? TRflVELIFT.

A model 100 BFM hauling a 65; 85 ton ferry boat with a 26' beam at Georgetown Yacht Basin, Georgetown, MD. rapidly in boats up to 120 feet. I see fiberglass becoming dominant for vessels up to that size." Why that size range? "As you get bigger and bigger, the stress properties of fi- berglass become more difficult to manage, and it's very difficult to build a fiberglass hull modularly."

Mr. Postma puts his sentiments on the benefits of fiberglass very succinctly: "More fun, less mainte- nance."

However, some interesting de- velopments have been made in alu- minum hull construction. Falcon

Maritime Ventures of Fort Lauder- dale this past year licensed a process of building aluminum hulls to

Lurssen Shipyards, which has a unit that is also in Fort Lauderdale,

Lurssen Yachts America. Patented by Dan Johnston in 1988, the method is in essence an application of the monoque construction pro- cess, where the hull panels take on an induced curvature in either a convex or concave shape. Report- edly the need for internal framing is substantially reduced due to plate- to-plate compressive loading of the hull panels, and the frames are at- tached to the heel plate only at the keel, chine and gunnel. The process reportedly reduces production time and total weight of the finished prod- uct, while maintaining strength and quality.

Mr. Smith said Trinity recently received an inquiry to adapt the

Circle 317 on Reader Service Card

A model 100 BFM hauling a 65; 85 ton ferry boat with a 16' beam at Georgetown Yacht Basin, Georgetown, MD.

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Details and specifications on the 100 BFM unit or our complete line of mobile boat hoists with capacities from 15 to 500 tons, or our line of Mariner® forklifts are available from your local representative or Marine Travelift,

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WI 54235 USA* Fhone: 414-743-6202 • TELEX: LIFTS STGB 260056 • FAX: 414-743-1522. design of the AGOR 23, a 274- oceanographic survey vessel b< built by Trinity under a Navy i tract, into a megayacht—very m in the spirit of combining milil and commercial applications, as federal government is advising I shipbuilders to do. The theori vessel would have flume tank sfc lization, working without moti unlike usual fin stabilizers. "Alo things we've done for the Navy hi application in the superyacht m ket," he said. "The big AGO displacement hull lends itself to yacht design."

Mr.Smithalso saidhe sawthii like diesel electric propulsion a steerable Z-pellers with omnidir tional thrusting and dynamic po tioning growing in megayacht i plications.

Boston Whaler Introduces

Impact 21-Foot Yacht Tende

Boston Whaler's new Impact 21-foot targets tf megayacht market.

The Lauderdale Marina, Inc. oi fers a new Boston Whaler Impac 21-foot specially customized to mee the megayacht owner's desire for i soft-sided tender that resists sui and salt water, stands up to hare use and will reportedly never de flate. After years of supplying Rigic

Inflatable Boats (RIBs) to the megayacht market, the Lauderdale

Marina, Inc. purchased a Boston

Whaler Impact 21-foot for customiz- ing and use as a high-quality, highly versatile megayacht tender.

The Impact 21-foot reportedly incorporates luxury appointments and seating arrangements suited to the needs of the large yacht owner who is looking for an elegant, dry, soft-riding tender able to carry guests in comfort and handle a vari- ety of other tender duties with equal facility. Powered by a 200-hp OMC outboard, this all-fiberglass yacht tender comes with a host of built-in features for megayacht operators.

Based on Boston Whaler's Deep-V hull design which makes for a fast, comfortable trip on open water, the new Impact 21-foot bridges the gap between RIB and Boston Whaler's strong, rugged unibound hull con- struction. The vessel features a wraparound foam fendering system designed to absorb the shocks and bangs of hard use. With a beam of 8.25 feet, the Impact 21-foot has plenty of stowage space and a dive door for accessibility to swimmers.

Lifting rings are provided to meet the requirements of any megayacht davit system. For more information on Boston Whaler's Impact 21-foot,

Circle 339 on Reader Service Card 74 Maritime Reporter/Engineering News