Page 26: of Maritime Reporter Magazine (November 1986)

94th SNAME

Annual Meeting future near-term developments are considered as well. A synopsis of recent oceanographic vessel con- struction, and user or scientific re- quirements for oceanographic ships are presented. General-purpose, geological, geophysical, and fisher- ies vessels are described.

Paper No. 6—"Liquid Sloshing in Slack Ship Tanks: Theory, Ob- servations, and Experiments," by

N.A. Hamlin, Y.K. Lou, W.M.

Maclean, F. Seibold, and L.M.

Chandras.

ABSTRACT—Sloshing waves in partially filled oscillating rectangu- lar tanks are shown to agree well when determined experimentally, and by analysis using a nonlinear theory for smooth tanks, and a nu- merical simulation technique for tanks with two-dimensional obsta- cles. Cases of shipboard sloshing damage are cited. Model tests are given for sloshing forces on structur- al members, and sloshing pressures, in ship-like tanks with internal structure.

Paper No. 7—"Research Plan for the Investigation of Dynamic

Instability of Small High-Speed

Craft," by Steven H. Cohen and

Donald L. Blount.

ABSTRACT—Small high-speed craft have been known to lose stabil- ity while under way even though they possess adequate stability at rest. Unstable conditions can in- clude rapid loss in running trim, progressive heeling, or sudden com- bined roll-yaw motion. The prirriary objectives of this paper are to focus attention on this little-understood problem, describe recent develop- ments, and present a long-range re- search plan.

Paper No. 8—"Time-Simula- tion of Ship Motions: A Guide to the

Factors Degrading Dynamic Stabili- ty," by N.M. Elsimillawy and

N.S. Miller.

ABSTRACT—A time-domain numerical simulation of the ship motions in regular sinusoidal waves in six degrees of freedom has been (continued) —A Preview

PAPERS COMMITTEE

Jack A. Obermeyer, Chairman

Jack W. Abbott

Steven G. Buttner

Warren C. Dietz

James F. Dunne

Keith P. Farrell

Jacques B. Hadler

James A. Higgins

Chester L. Long

Peter M. Palermo

Spencer Reitz

Wm. duBarry Thomas

Richard W. Thorp Jr.

William E. Zimmie

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