Page 2: of Maritime Reporter Magazine (August 15, 1973)

3 floating drydockSoto 18,000 tons

Shipways to 100 x 700 feet • Piers to 1,100 feet

When your ship comes in for repair to

Lockheed, stand aside, or get run over.

Our crews move fast. We make a specialty of getting vessels up, out and turned around in short order — and well done.

This reduces your repair cost and time lost.

Our people know their jobs, like their work, and take pride in doing it. They are ef- ficient, and Lockheed provides the finest in facilities and equipment so they can be.

Write or phone Bob Forbell, manager of ship repair. He is in charge from quote to delivery.

LOCKHEED

SHIPBUILDING AND

CONSTRUCTION COMPANY 2929 16th AVE. S.W., SEATTLE, WASH. 98134

PHONE 206-623-2072 • CABLE L0CKSHIP

IN NEW YORK: LOCKHEED, 420 Chrysler Bldg., 405 Lexington Ave., N.Y., N.Y., 10017 • Phone 212-697-7170

SNAME Conducts

Full-Scale Tests

In Yacht Research

As part of its continuing effort to improve sailing yacht performance,

Panel.H-13 (Sailing Yachts) of The

Society of Naval Architects and Ma- rine Engineers' Technical and Re- search (T&R) Program conducted full-scale tests on an approximately 39-foot yacht to determine loading on mast and rigging under way to wind- ward. These tests are described in

T&R Bulletin 1-30, "Rigging Loads of the 12-Metre Yacht Weatherly."

Until now, such thorough informa- tion has not been available and it is hoped that the results of this SNAME comprehensive testing program will aid yacht designers in designing more efficient rigs and spars with more assurance that they will not fail.

The tests, coordinated by members of Panel H-13, were conducted with the cooperation of the U.S. Merchant

Marine Academy, Philip L. Rhodes,

Inc., Grumman Aircraft Engineering

Corp., Sparkman & Stephens, Inc.,

U.S. Coast Guard, Moran Towing

Co., and various insurance under- writers. The testing was designed to record simultaneous measurements of standing and running loads on the rigging and bending and compression loads on the mast under realistic wind- ward sailing conditions. The tests, in addition to covering a wide range of wind conditions and heeling angles, simulated operation in a seaway through the use of the tug Eugenia

Moran to produce waves in the rela- tively smooth water of Long Island

Sound. The bulletin includes samples of the data collected and plots of measured loads, as well as an analyti- cal check on the test results. An anal- ysis of the problems encountered in the testing program was also made and suggestions for future testing in this area are included.

Bulletin 1-30, "Rigging Loads of the 12-Metre Yacht Weatherly," was reviewed for publication by the Hy- drodynamics Committee of the Soci- ety's T&R program and is available through The Society of Naval Archi- tects and Marine Engineers, 74 Trin- ity Place, New York, N.Y. 10006, for $9 per copy. Members of the So- ciety may obtain a copy for $6. If payment is included with the order, these prices include postage via third class mail in the United States and as "Printed Matter" in all other coun- tries. Shipments will be insured or sent air mail at additional cost only if requested.

ANOTHER COPPUS BLUE RIBBON PRODUCT

COPPUS

Specialists in Portable Ventilation

COPPUS ENGINEERING CORP.,

Box 457, Dept. MR, Worcester, Mass. 01613

You get

VERSATILITY with Coppus

Air Power

Like...

THE NEW P0RTAVENT

For Welding or General Venting — Meets OSHA standards with single or dual tube runs to 50 ft.!

PORTAVENT — the newest, most versatile addition to the Coppus Portair line. It's a new concept in multi-use portability and efficiency. A welding-fume exhauster that's ideal for general ventilating jobs around shipyard or plant. Look at the features: • Exceeds C^M regulation requirements set forth in

OSHA regulations, with single or dual tube runs to 50 ft. • 500 CFM free air delivery. • 2 station capability reduces per-man ventilation costs. • One man portability — 48 lbs. light. • Unique "milk-stool" base for wide positioning choices. • Extremely rugged to withstand abuse.

The versatile new Portavent is another example of

Coppus Air Power at work. Whatever your venting/ blow- ing problems, we have the answers. And there's regional

Coppus sales-engineering know-how, plus in-stock avail- ability near you. Tell us your problem, and be confident that Coppus Air Power can solve it safely.. .with versatility.

MARITIME

REPORTER

ENGINEERING NEWS 107 EAST 31st STREET

NEW YORK, N.Y. 10016

MUrray Hill 9-3266, 3267, 3268, 3269

ESTABLISHED 1939

No. 16 Volume 35

Maritime Reporter/Engineering News is published the 1st and 1 5th of each month by Maritime Activity Reports, Inc.

Controlled Circulation postage paid at Hoboken, N.J. 07030.

Postmaster send notification (Form 3579) regarding un- deliverable magazines to Maritime Reporter/Engineering

News, 107 East 31st Street, New York, N.Y. 10016.

Member

BPA

Business Publications

Audit of Circulation, Inc. 4 Maritime Reporter/Engineering News