Page 48: of Maritime Reporter Magazine (November 1985)

93rd SNAME

Annual Meeting — A Preview scribes the rationale behind the de- velopment of practical semisubmer- sible stability criteria that reflect the current state of the art while maintaining the simplicity of exist- ing regulations. The proposed crite- ria are based on an energy balance approach and incorporate the ef- fects of wind, waves, and vessel mo- tions. Practical applications are considered and discussed.

Paper No. 5—"A New Warship

Design Strategy—A Perspective," by William H. Garzke Jr. and

George Kerr.

SYNOPSIS—This new warship design approach to naval ship de- sign is intended to provide the abili- ty to relate a warship's physical attributes (which will define its cost) to the mission requirements they serve, and to use these relation- ships in the design, development, and construction of more cost- and combat-effective warships.

Paper No. 6—"Vibration Re- sponse on Propulsion-Efficient

Container Vessels," by Hans G.

Payer and Iwer Asmussen.

SYNOPSIS—Fairly detailed vi- bration calculations are required during the design phase in order to effectively avoid vibration problems in propulsion-efficient vessels. Typ- ical calculation results including the forced vibration response are pre- sented in this paper and compared with results from measurements for a 2,000-TEU containership. It is shown that the vibration behavior can be predicted with sufficient ac- curacy to base design decisions on the results.

Paper No. 7—"Rough Propeller

Penalties," by R.L. Townsin, D.S.

Spencer, M. Mosaad, and G. Pa- tience.

SYNOPSIS—The ship operator is offered a standard procedure for measuring blade surface roughness using a stylus instrument of com- parator gauges. From the resulting single number Average Propeller

Roughness, the power penalty may be calculated simply from a nomo- graph. The theoretical basis for the

PAPERS COMMITTEE

Jack A. Obermeyer, Chairman

Jack W. Abbott James A. Higgins

Steven G. Buttner Chester L. Long

Warren C. Dietz Peter M. Palermo

James F. Dunne Spencer Reitz

Keith P. Farrell Wm. duBarry Thomas

Jacques B. Hadler Richard W. Thorp Jr.

William E. Zimmie <• Circle 202 on Reader Service Card

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