Theories and procedures for predicting a ship’s hydrostatic response to various conditions are addressed. Methods for computing the stability characteristics of both intact and damaged ships are studied. Floodable length computations are taught. Stability and subdivision criteria are explained. The lines plan for a hull form is developed and analyzed.
A naval architect must have below abilities to generate a good job on this subject:
- Describe methods for calculating a ship’s hydrostatic properties, including calculation of areas, volumes, centroids, and important hydrostatic parameters such as Δ, LCF, LCB, KB, KM, TPI, MT1.
- Draw and interpret a ship’s lines drawing.
- Calculate and assess basic intact, impaired, and damaged stability characteristics of a ship. Specifically, calculate metacentric height (GM), calculate and plot righting arm curves (GZ), and calculate changes in drafts and trim for weight additions, removals, or shifts.
- Describe basic methods to calculate a ship’s damaged stability and trim and determine required watertight subdivision, including the development of floodable length curves.
- Describe basic design criteria for assessing intact and damaged stability of naval and merchant ships, including intact and damaged heeling moment and righting energy criteria, and extent of damage and watertight subdivision criteria.
- Describe basic characteristics of submarine hydrostatics, stability, and trim, including the equilibrium polygon, and basic hydrostatic and hydrodynamic effects on depth control.
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