Page 18: of Maritime Reporter Magazine (February 15, 1974)

SNAME N.Y. Metropolitan Section Hears Technical Paper

On 'New Approach To The Ship Hull Characteristics Problem'

Shown above during the New York Metropolitan Section meeting at the Seamen's Church Institute, left to right: Mon- roe D. Macpherson; Donald B. Carpenter, Section chairman; Robert G. Mende, SNAME national secretary; J. Horton;

T. Zielinski, author; Lester Rosenblatt; Phillip Eisenberg, Society president; Patricia M. McGovern; D. Hoffman, au- thor; Thomas J. Sartor Jr., Section vice chairman, and Dr. Walter M. Maclean.

The New York Metropolitan Section of The

Society of Naval Architects and Marine Engi- neers met on January 15, 1974, at the Seamen's 'Church Institute in New York City.

After a social hour and dinner, the technical session was held at which a paper was pre- sented entitled "A New Approach to the Ship

Hull Characteristics Problem," by D. Hoffman and T. Zielinski of the Webb Institute of Naval

Architecture.

In the paper, conformal mapping techniques are used as a mathematical means of present- ing the two-dimensional ship section iby means of an array of approximately 10 elements.

The geometric properties of any transverse section are determined in an explicit form rather than by numerical approximation.

These arbitrarily spaced transverse sections are integrated longitudinally to give specific values for tanks or damaged compartments, as well as the general ship characteristics for the case of level, trim or any other mathematically defined waterline profile such as a sinusoidal or trochoidal wave.

This form of ship geometry input is particu- larly suited for computer applications, due to its compact storage requirements. It is also identical to the input used for ship dynamics calculations to determine motions, loads, vibra- tions, etc.

Examples showing applications of this ap- proach in both ship design and onboard hard- ware .manipulations are given.

Society president Phillip Eisenberg was present at this meeting and addressed the members of the Section on Society programs and other matters of interest to the member- ship.

Chemical Tanker Operator

Moves New York Headquarters

Stanalchem Inc., worldwide marketer of bulk chemicals and petrochemical feedstocks, has moved its headquarters to 299 Park Avenue,

New York, N.Y. 10017, it was announced by

Samuel C. Johananoff, president.

The Amsterdam and Paris-based Johananoff

Group, which includes Stanalchem, is com- prised of 14 operating companies in 12 coun- tries. Describing the Group's operations, Mr.

Johananoff, its chief executive said: "I believe we are the largest integrated international mar- keter of bulk chemicals. We command a fleet of eight chemical tankers and maintain dock- side bulk storage and distribution terminals in 10 strategic locations." "I'LL BfATTHt POWSR SMZ1AH Ye^/F mp OUT. "

ASNE Annual Meeting Set For

May 2-3 In Washington, D.C.

The president of The American Society' of

Naval Engineers (ASNE), Rear Adm. D.H.

Jackson, USN, announced that the Society has scheduled its annual national meeting, ASNE

Day, for Thursday and Friday, May 2-3, 1974, at the Shoreham Hotel, Washington, D.C.

The Society, founded in 1888, by definition includes all arts and sciences applied in the research, development, design, construction, operation, maintenance and logistic support of ships, aircraft, ship-related systems, ocean structures and fixed and mobile shore facilities used by the Navy, Coast Guard, Marine Corps, and the maritime auxiliaries for the defense and well-being of the nation.

The theme of this year's meeting is "Work of Interest to the Naval Engineer" and during the two-day technical session, 16 papers will be presented covering such technical topics as

Test and Evaluation Programs, Navy Diver

Programs, Advances in Naval Combat Systems and Celestial Navigation, Environmental Pro- tection Systems, Combatant Capability and

Tactical Requirements, Manning Requirements,

Modular Ship Design, etc. Discussions are planned to follow each presentation to stimu- late activity among a cross-section of Govern- ment and industry engineers and military offi- cers in attendance.

J. Vollbrecht, president, Aerojet General Cor- poration, will speak at the annual banquet on

May 3, 1974.

Registration for the technical sessions and/ or luncheon and banquet may be made in ad- vance with ASNE at its headquarters at 1012- 14th Street, N.W., Washington, D.C. 20005, or upon arrival at the Registration Desk in the

Shoreham Hotel's Executive Room. Room reservations should be made directly with the hotel.

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February 15, 1974 21