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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: This paper presents the results of an extensive research into model test technique and the extrapolation problem in shallow water. These results enable us to examine the necessity for the use. of a method of three-dimensional extrapolation for shallow water. Experimental data on wall effect have been obtained by carrying out tests according to the method of images in a pressure-tight shallow-water basin. With the aid of a three-dimensional extrapolator the wall effect has been divided into effects on frictional and on wave-making model resistance. The results of the wall-effect tests were compared with the Kreitner theory and the influence …of slots between tank walls and an adjustable bottom was analyzed. The results of propulsion and overload tests are given. Finally the correlation between model tests in shallow water and full-scale trials on a lake and the river Rhine has been discussed. Show more
Citation: International Shipbuilding Progress, vol. 4, no. 31, pp. 127-142, 1957
Authors: Bonny, A.D.
Article Type: Research Article
Abstract: Depending on the auxiliary loads, the method of auxiliary drive, and the amount of regenerative heating employed, a range of 10 per cent. in fuel rate is found on analysing a number of tanker designs of similar power. In a specific design with given loads, alteration to the auxiliary drive and feed heating can alter the fuel rate by 6 to 7 per cent. The methods of auxiliary drive are examined and similarly the use of regenerative heating is evaluated. These are combined to give a “Cycle Ratio” which affords a useful criterion of the efficiency of a system. The …cycle ratios of a number of feed circuits are compared and their relative first costs are briefly examined. While the more complex cycles are generally more efficient than the simpler ones, their cost is higher and this tends to lessen the saving from their adoption. Fairly simple cycles can be evolved that are both cheap and efficient, while in other cases the quest for simplicity may lead to too great an increase in fuel rate and hence an appreciable increase in cost taken over the life of the ship. Show more
Citation: International Shipbuilding Progress, vol. 4, no. 31, pp. 143-154, 1957
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