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The journal International Shipbuilding Progress (ISP) was founded in 1954. Each year two issues appear (in March and September). 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: Jacobs, Winnifred R.
Article Type: Research Article
Abstract: An analytical method combining simplified potential flow theory and low aspect-ratio wing theory with empirical modifications for a real viscous fluid is used to predict the stability derivatives (first order hydrodynamic force and moment derivatives) of a family of hulls in order to estimate the dependence on geometric characteristics of course stability and turning or steering qualities. The hulls are Taylor Standard Series forms with after deadwood removed and have the same length and prismatic coefficient but varying length-draft and beam-draft ratios and skeg area. Comparison between the values calculated by this method and those obtained from experimental measurements shows …good agreement. The analytical method can predict the relative effects of the geometrical characteristics Calculated magnitudes are slightly different from the experimental but are on the conservative side. However, since the hulls tested have the same prismatic, the empirical modification for the rotary moment derivative which is a function of prismatic coefficient has not been fully tested. Necessary refinements of the method must wait on analysis of data on series of forms with different prismatic as well as length-draft and beam-draft ratios. Show more
Citation: International Shipbuilding Progress, vol. 11, no. 121, pp. 414-425, 1964
Authors: Wereldsma, R.
Article Type: Research Article
Abstract: The principal approach to a theoretical analysis for the determination of the athwartships propeller vibrations is given. The results show that the fluctuating load of the propeller shaft, due to the vibratory forces of the propeller, cannot be neglected with respect to the shaft load, resulting from the average propeller thrust and torque.
Citation: International Shipbuilding Progress, vol. 11, no. 121, pp. 426-434, 1964
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