Page 14: of Maritime Reporter Magazine (March 1978)

Litton Exhibits New Load Monitoring System Pacific Northwest Section Hears Paper

On Application Of Seakeeping Analysis

Pictured during the exhibition at the Waldorf-Astoria, left to right: Her- bert H. Halperin, managing director, Litton Automated Marine Systems;

Victor H. Prushan, marketing manager, Litton Automated Marine Sys- tems; Ralph A. Nilssen, Ogden Marine, Inc.; Rene R. Descloux, Ogden

Marine, Inc., and Neil M. Miller, Republic Steel, Ocean Marine Division.

Principals shown above at the SNAME Pacific Northwest Section meeting, left to right: W.A. Dahlbeck, Papers Committee chairman, Pacific North- west Section; E. Horner, vice chairman, British Columbia Area, Pacific

Northwest Section; W.E.G. Talbot, chairman, Pacific Northwest Section;

J.T. Bringloe and B.L. Hutchison, authors, L.R. Glosten & Associates Inc., and L.P. Zankich, vice chairman, Puget Sound Area, Pacific Northwest Section.

Litton Automated Marine Sys- tems of Woodland Hills, Calif., a division of Litton Systems (Can- ada) Limited, Toronto, Ontario, recently held a private exhibition of their Load Monitoring System in New York City. The exhibition, held at the Waldorf-Astoria Ho- tel, was attended by key repre- sentatives of the marine industry located on the East Coast.

During the two-day period, Lit- ton Automated Marine personnel demonstrated the ease with which the Load Monitoring System can be operated. The LMS calculates and displays the cargo-loading plan, shows shear force and bend- ing moment curves for each con- dition, and provides a tabular summary of trim and stability data.

If installed as an on-line sys- tem, the LMS automatically re- ceives ullage input from the ship's tank gauging system. The data is manually entered through the simplified keyboard for off-line systems. An off-line system can perform load calculations for more than one ship through the provi- sion of additional tape cassettes containing pertinent characteris- tics of the ships involved.

Litton Automated Marine Sys- tems markets a broad range of computer-based systems for the marine community. Included in the range of products are trend analysis systems for performance monitoring of steam and diesel plants and automatic navigation and steering control systems.

Literature describing Litton's computer-based systems can be obtained by writing to Victor H.

Prushan, Litton Automated Ma- rine Systems, 21101 Oxnard

Street, Woodland Hills, Calif. 91364.

Ninety members and guests of the Pacific Northwest Section of

The Society of Naval Architects and Marine Engineers recently attended a regular meeting held in Pier 91 Officers' Club, Seattle,

Wash.

After dinner, a technical paper titled "Application of Seakeeping

Analysis" was presented by Bruce

L. Hutchison and J. Thomas

Bringloe, naval architect and vice president, respectively, of L.R.

Glosten & Associates Inc.

The authors stated that the basic purpose of the paper is to utilize the theoretical tool of mod- ern seakeeping analysis in an ap- proach to the solution of some shipboard engineering problems.

Deterministic and stochastic processes were explained, the lat- ter being the current vehicle for the study of seakeeping, the his- torical development of which was traced from Sir Isaac Newton to the present state-of-the-art.

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The study, analysis and predic- tion of ship motions takes place in the time, frequency and probabil- ity domains which are analagous to the different projections of the same object as drawn by the draftsman, each revealing salient features not observable in others.

The above theory incorporates the use of tabulations of observed sea states as reported by ships.

Several excellent publicly avail- able, high-speed, computer pro- grams are used by the practicing engineer at moderate cost which, together with his own post proc- essing program, will manipulate the basic response data into forms which directly answer his ques- tions. Ship motions program "SCORES" and post processing program "CARGO" are being uti- lized by the authors.

In conclusion, the application of the foregoing analytical tool has been used by the authors' com- pany in providing the best engi- neering techniques involving pe- culiar cargo stowage problems for such items as process plant mod- ules or drilling platforms.

Other applications are the de- velopment of operating instruc- tions or design criteria for bal- lasting of vessels, design analysis of heavy lift arrangements with particular reference to offshore construction operations, sailing instructions for a particular voy- age or even real-time routing dur- ing the voyage. These are but a few of the potential applications for seakeeping analysis.

Copies of the paper can be ob- tained from the Section Librar- ian, C.S. Bracken, P.O. Box 24382,

Seattle, Wash. 98124.

Burmah Oil Appoints

Haddow To Board

Robert Scott Haddow has been appointed to the board of Burmah

Oil Co. Ltd., it has been an- nounced by the company. For- merly president of Amoco Ship- ping Inc., Mr. Haddow became shipping adviser to the Burmah

Group in April 1975. He will re- tain his existing responsibilities as chief executive, Tankers Ltd., and president of Burmah Oil Ship- ping Inc. 16 Maritime Reporter/Engineering News