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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: Forced heaving experiments were carried out with a seven-section model in still water, to investigate the distribution of damping and added mass along the length of a shipmodel. The components of the vertical forces in phase with the heave displacement and the quadrature components on each of the seven sections were measured as a function of the frequency and the forward speed of the model. This allowed the determination of the sectional damping coefficients and the sectional added masses, and their distribution along the length of the model. The results show a fairly large influence of frequency and …forward speed on the distribution of damping. There is some influence of frequency on the distribution of added mass, but the influence of forward speed is small. In some conditions negative sectional damping and added mass was observed. The distribution of damping results in coefficients of the heave velocity coupling terms, which depend on the forward speed. In the practical range of frequencies the coefficients of the heave acceleration coupling terms are very small. The experimental results are compared with Grim’s theoretical values for damping and added mass at zero speed. Show more
Citation: International Shipbuilding Progress, vol. 10, no. 103, pp. 73-84, 1963
Authors: Milton, J.H.
Article Type: Research Article
Abstract: The object of this paper is to endeavour to present something of interest to marine engineers in general: it deals entirely with troubles that have occurred, and which have been investigated and could repeat themselves, although not, it is hoped, on the same vessels! The subject is dealt with in the following categories: Oil Engines; Turbines; Boilers; Shafting and Propellers; Vibration. Investigations of troubles experienced in each category, and wherever possible the recommendations made for their rectification, are described.
Citation: International Shipbuilding Progress, vol. 10, no. 103, pp. 85-107, 1963
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