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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:
- Concept development
- General design of ships and offshore objects
- Ship and offshore structural design
- Hydro-mechanics and -dynamics
- Maritime engineering and machinery systems
- Production processes of all types of ships and other objects intended for marine use
- Production technology and material science
- Shipping science, economics, and all directly related subjects
- Ship operations
- Offshore and ocean engineering in relation to the marine environment
- Marine safety
- Efficiency, lifecycle, and environment
- Ice-related aspects for ships and offshore objects.
The contents of the papers may be of a fundamental or of an applied scientific nature and must be of the highest novelty and rigor.
Article Type: Research Article
Abstract: Tests have been carried out in the water tunnel to measure the side force produced by a model of the rotating cylinder rudder for a range of cavitation numbers in uniform flow. It was found that at atmospheric pressure the maximum side force coefficient obtained was 1.46 at a rudder angle of 50° compared with 0.65 at an angle of 20° when the rudder was being used in the conventional way, i.e., without the cylinder rotating. The highest useful ratio of cylinder speed to flow speed was found to be 3.0. Under cavitation conditions it was found that …the maximum side force coefficient which could be obtained was decreased as the cavitation number was reduced, thereby affecting the beneficial effects of the rotating cylinder. At the lowest cavitation number (σ = 0.5 ) the side force coefficient developed, with the cylinder rotating at its normal optimum speed ratio of 3.0, was little greater than when the cylinder was not rotating. Show more
Citation: International Shipbuilding Progress, vol. 28, no. 317, pp. 2-9, 1981
Article Type: Research Article
Abstract: Calculated results are presented for a flexible container ship travelling at 26 knots in a long crested irregular bow sea. Representative mean square spectral densities are given for lateral shear force, lateral bending moment and twisting moment. The influence of allowing for warping stiffness is examined and comparisons are made with results obtained using conventional theory based on the assumption of huh rigidity.
Citation: International Shipbuilding Progress, vol. 28, no. 317, pp. 10-19, 1981
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