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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.
Authors: Gerritsma, J.
Article Type: Research Article
Abstract: Calculated and measured ship motions in longitudinal regular and irregular waves are compared and discussed. As examples of the superposition principle the probability of shipping green water and the occurence of slamming in irregular waves is determined. The influence of these phenomena on the sustained sea speed of a ship is discussed. The increased resistance and power of a ship in a given wave spectrum are analysed and the prediction for the ship in an irregular wave, agrees satisfactorily with full scale observations.
Citation: International Shipbuilding Progress, vol. 13, no. 143, pp. 207-221, 1966
Article Type: Research Article
Abstract: With conventional non-pressure charged four-stroke engines and with two-stroke engines having a directly coupled scavenge pump the quantity of air delivered to the engine does not change with variation in load of the engine at the same engine speed. In contrast to these engine types the large Stork marine engine is pressure charged by the turboblowers only. There is therefore no direct relation between the speed of the engine and the quantity of air consumed by the engine for combustion and scavenging. In Part I a number of engine characteristics, resulting from this fact is discussed. In Part …II some data on the practical experience with the Stork engine over a decade of operation are presented. These data include cylinder liner wear and consumption of piston rings, behaviour of exhaust valves, cylinder corvers, pistons, bearings, fuel atomizers and turboblowers. Various aspects of maintenance are discussed as well as the measures taken to extend the period between overhauls of a number of essential engine parts. Show more
Citation: International Shipbuilding Progress, vol. 13, no. 143, pp. 222-246, 1966
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