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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: Hell, Antz
Article Type: Research Article
Abstract: Two fishing boat models of about 85 feet in length have been tested at different drafts to compare the resistance qualities. One model is a traditional Swedish wooden trawler, the other one is of a form optimized according to the FAO/NPL regression analysis. The results show that the Swedish trawler is inferior from a resistance point of view. The optimized form gives very good results and also a good correlation between model experiments and theoretical calculations.
Citation: International Shipbuilding Progress, vol. 16, no. 183, pp. 329-341, 1969
Authors: Kenis, Paul R.
Article Type: Research Article
Abstract: Bacteria which produce drag-reducing polymers have been isolated from eleven hydrodynamic test facilities in the United States, Great Britain, and France, and appear to be ubiquitous in all fresh and ocean water. These polymers are likely extracellular polysaccharides and have been produced by bacteria which grow at either cold, moderate, or high temperatures. Sugar enrichment studies suggest that the absence of suitable energy and carbon sources limit polymer production in natural waters. In order to maintain constant drag in hydrodynamic test facilities, it is recommended that primary production by algae be prevented and degradable organic material be eliminated in order …to minimize potential carbon sources for bacterial drag-reducing polymer synthesis. Some drag-reducing polymers from bacteria may be concentrated by bubbling, and implications of this phenomenon are discussed. Show more
Citation: International Shipbuilding Progress, vol. 16, no. 183, pp. 342-348, 1969
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