Yacht Symposium To Provide Informational Headwind


January 27, 1991|By Nancy Noyes

Sailors who are interested in the whys and hows of their performanceon the water as well as the whats, and those with an engineering bent, should take note of this year's Chesapeake Sailing Yacht Symposium.

The event will be conducted from 8 a.m. to 6:30 p.m. Saturday, Feb. 9, in the Naval Academy's Mitscher Hall.

The symposium is co-sponsored by the Chesapeake Section of the Society of Naval Architects and Marine Engineers, the Chesapeake Bay Yacht Racing Association and the Naval Academy Sailing Squadron.

It is a forum where designers, builders, sailmakers, and interestedracing and cruising yachtsmen share information and discuss the development of new technologies, practical applications of those technologies, and other topics of interest in the field of sailboat design and construction.

Presented as a series of papers on eight different topics, the symposium will examine the most recent experimental research data, structural design techniques, the effect of wind-heel and gusts on yacht performance, practical applications of velocity performance prediction methods and other issues. Discussion and questionswill follow each session.

"It's aimed about halfway between theindustry professional and the layman," said symposium spokesman Hal Whitacre of Kaufman Design Inc. in Annapolis.

"They try to keep it away from the deep, deep technical stuff that puts people to sleep, and use lots of visual aids and practical examples and applications. And if there's something that really interests you and you want more technical information, that's available in the supplementaries. The majority of the topics will have lively discussions afterward, too, since they encourage audience questions and comments."

CSYS has beenknown since its inception in 1974 as a premier forum for presenting sailing yacht design technical literature.

Over the years it has featured numerous general interest papers with topics including historical boats of the Chesapeake region, and design and construction techniques for the home builder.

It has provided an international forum for discussion of emerging technologies such as the evolution

of computer-aided design and analysis tools and their relationship to racing handicap rules, capsizing studies and technical developments in the America's Cup field.

Moderators for this year's symposium include Cdr. C.H. Barber, USN, director of Naval Academy sailing; noted yacht designers Karl Kirkman and Gary Mull; and Naval Academy professor Bruce Johnson, past president of CBYRA.

"It's really a variedprogram this time," said symposium Steering Committee member Andy Kondracki of Advanced Marine. "There's hardly any paper that has to do with the same thing as any other paper, so we have a really good range and a lot of variety."

Speakers and their papers during the morning sessions include:

* Canadian Peter Hinrichsen on "Gyradius Measurements of Olympic Class Dinghies and Keel Boats," a discussion including practical applications of swing-testing of small boats in regard to the relationship of weight balance to performance improvement.

* Ronnal P. Reichard on "Structural Design and Construction of America's Cup Class Yachts."

* Dutch marine engineer G.K. Kapsenberg on "A New Technique for Testing a Sailing Yacht in Waves."

* Dutch engineering professors J. Gerritsma, J.A. Keuning, and R. Onnink on "The Delft Systematic Yacht Hull (Series II) Experiments," a look at further developments in the VPP system, which has become an integral part of IMS measurements.

"The gradius measurement paper should have some practical do-it-yourself applications for dinghy sailorsinterested in improving their performance, since it involves end-to-end balance and its effects," Whitacre said, "and the America's Cup presentation should be interesting because of the technology and the expense involved in building an America's Cup class yacht.

"The Delft Series I studied are now used for IMS VPP, and the new Series II is an updated version aimed at more modern hull designs. This sort of stuff will definitely trickle down to (lay people), especially to people sailing in IMS."

Following a lunch break, the afternoon session's speakers and

topics include:

* Capt. Richard T. Miller, USN (Ret.) and Whitacre on "Conversion of a Star Class Racing Boat to an Old Man's Day-Sailer," an outline of the steps used to convert a strenuous racing boat to a pleasant day-cruiser.

* Italian designers Dario Boote and Mario Caponnetto on "A Numerical Approach to the Design of Sailing Yacht Masts," offering technical approaches to structural analysis.

* Briton Barry Deakin on "Model Test Techniques for Investigating the Wind Heeling Characteristics of Sailing Vessels and Their Response to Gusts."

* Local currentmeister/chart maker JamesP. Nolan on "Sailing Performance in a Current."

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