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The journal International Shipbuilding Progress (ISP) was founded in 1954. Each year four issues appear (in April, July, September and December). Publications submitted to ISP should describe scientific work of high international standards, advancing subjects related to the field of Marine Technology, such as:
The contents may be of a pure scientific or of an applied scientific nature.
Article Type: Research Article
Abstract: A nonlinear time dependent mathematical model is used to simulate the surge, sway and yaw motions and study the stability of a vessel towed by a nonlinear elastic rope. The five Routh-Hurwitz stability criteria for the corresponding linear time invariant system are studied and it is shown that only two can be critical in ship towing. The sensitivity of the stability surfaces generated by the reduced criteria is studied and the parameters which mostly affect the local stability of towing systems are identified. Global stability characteristics of the towed vessel trajectory are also revealed by finding the critical points of …the corresponding autonomous nonlinear system in the phase space. Numerical examples using a barge, a tanker and a mariner which have distinctly different behavior in towing are used to illustrate the simulation and verify the theoretical results. The latter are also used to explain the apparent contradiction between Strandhagen’s theoretical results and Benford’s and Brix’s observations. Show more
Citation: International Shipbuilding Progress, vol. 32, no. 369, pp. 112-123, 1985
Article Type: Research Article
Abstract: A container ship suffered serious structural damages caused in her fore body by slamming on a heavy sea in the North Pacific Ocean in January, 1978. She was in the fully laden condition on a voyage to Kobe from Oakland, California, U.S.A. A long brittle crack propagated in the fore and aft direction in the shell plating of the flare part on the starboard side. The inner structures, such as longitudinals, web frames and side stringers, on the side shell of the same side were collapsed, and the deck and shell plating on the port side was buckled. Furthermore, …the coaming of Nos. 1 and 2 hatches was distorted seriously. In the present paper, the damages are investigated from the viewpoint of ship hydroelasticity with the aid of fracture mechanics. The results obtained suggest the importance of ship handling as well as structural design for preventing damages in large container ships. Show more
Citation: International Shipbuilding Progress, vol. 32, no. 369, pp. 124-136, 1985
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