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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: Fujino, Masataka
Article Type: Research Article
Abstract: This paper deals with the ship manoeuvrability in restricted waters, separating the problem into two parts, that is, shallow water effect and finite channel width effect. At first, the author introduce linearized equations of motion with asymmetric hydrodynamic force caused by the presence of walls. Each coefficient of the equations of motion was determined experimentally by means of forced yawing technique, while the asymmetric hydrodynamic force coefficients were determined by straigth tow test. In this part, it is examined in detail to what extent each coefficient is affected by finite water depth and finite channel width. Then, the change …of the course keeping quality in restricted waters is also discussed. It is shown that a ship tends to be more stable on course in shallow water except certain range of medium depth of water, and that a ship tends to be unstable in channels. A detail of ship motions in channels will be discussed in Part II in later days. Show more
Citation: International Shipbuilding Progress, vol. 15, no. 168, pp. 279-301, 1968
Authors: Visser, N.J.
Article Type: Research Article
Abstract: The measurement of the axial stiffnesses of the cranks of four full scale crankshafts, supported by the engine main bearings, is described. The results are discussed and compared with those of the calculations using six published formulae. The relationship between the coefficients and the angles of adjacent cranks, or the “mean” crank angle, is investigated. The experimental results are verified with the theoretically determined shear force moments for axially loaded adjacent cranks The experimentally and theoretically determined stiffnesses are compared and finally proposals arc made for future work.
Citation: International Shipbuilding Progress, vol. 15, no. 168, pp. 302-316, 1968
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