Page 10: of Maritime Reporter Magazine (November 1981)

89th SNAME

Annual Meeting —A Preview (continued from page 10) and treasurer of Peterson Build- ers, Inc., Sturgeon Bay, Wis.

On Saturday night, the Grand

Ballroom will be the setting for the annual Dinner Dance, a fit- ting conclusion to the Annual

Meeting.

Technical Papers (See table for time and place)

Paper No. 1. "Investigation of a

New Inland Waterway Shipform" by Hsueh Chung-chuan, Wang

Zhi-fa, Li Ru-zhen, Tao Mei-fang and Cheng Zhen-zhong.

SYNOPSIS —The authors de- scribe a new shipform having a flat bow and cochlea-channeled stern, which is a development and skillful combination of a "flat bow" form of ancient China and a "cochlea-channeled stern" form developed by Giovanni B.

Tommasi in the 1970s. Results from comparative tests on the ship models are presented. The

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Henkel influence of the bow and stern on the ship performance is dis- cussed ; the abnormal phenomena observed are analyzed, and the- oretical inferences are made. Also treated is the first full-scale ship's trial trip.

Paper No. 2. "Design and Opera- tional Considerations for Liquid

Bulk Carrier Inert Gas and Ven- tilation Systems to Provide Safe

Tank Gas Concentrations" by

Robert L. Bass III, Thomas B.

Morrow and Raymond J. Magott.

SYNOPSIS — This paper gives the results of a study of inert gas take-off designs and ship tank gas exchange methodology.

Scale model tests of shipboard uptakes to assess the effect of take-off location and the ratio of inert gas to flue gas flowrate on inert gas quality are presented.

Also included are tank gas ex- change tests performed at sea onboard a 390,000-dwt crude oil carrier.

Paper No. 3. "Risk and Operabil- ity Analysis in the Marine Envi- ronment" by Bruce L. Hutchison.

SYNOPSIS—A method is pre- sented for developing the prob- ability distribution for failure and operability functions. The technique discussed can be ap- plied to systems operating in spatially- and time-varying wave climatologies, and subject to the favorable influence of seaman- ship actions. The paper discusses motivation and applications, traces the development of con- cepts, outlines detailed proce- dures and concludes with actual examples.

Paper No. 4. "Revival of the

Coastal Tanker: Development and

Construction of a U.S.-Flag 2,500- dwt Product Carrier" by Joseph

D. Mazzei and Rudolph G. Terry.

SYNOPSIS — The Northern

Sun, a 2,500-dwt coastal tanker, was constructed in a conscious departure from tug and tank- barge operation. Operating expe- rience with both small harbor tankers and tug/barge fleets, to- gether with recognition of mod- ern technology and reduced man- ning potential on ships, formed the basis for a decision to re- think ver^el acquisition for wa- terborne intercoastal petroleum products distribution.

Paper No. 5. "Major Factors in

Frigate Design" by William H.

Garzke Jr. and George Kerr.

SYNOPSIS—This paper identi- fies the major factors in frigate design and offers several designs as examples of how these affect a ship's size, cost and perform- ance. Some of the major deter- minants of frigate size and cost discussed in this paper include: choice of propulsion plant; max- imum sustained speed, cruising (continued on page 15) 12 Write 351 on Reader Service Card Maritime Reporter/Engineering News