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define boat dimensions and calculate boat parameters. explain factors interacting stability. evaluate stability of a sail boat using Dellenbaugh method. explain and estimate elements of sail boat performance. estimate boat speed and power requirements. explain structure and content of lines drawing. prepare a proposal concept design.
HULL FORM AND GEOMETRY. Be familiar with ship classifications. Explain the difference between aerostatic, hydrostatic, and hydrodynamic support. Be familiar with the following types of marine vehicles: displacement ships, catamarans, planing vessels, hydrofoil, hovercraft, SWATH, and submarines.
The prismatic coefficient is the ratio of actual underbody volume to the volume of a prism having a length equal to the DWL, and a section equal to the boat's maximum sectional area. The prismatic coefficient provides an indication of the distribution of displacement.
Calculation applies to all three body axes: x,y,z. x can be referenced to any point, e.g., bow, waterline, geometric center, etc. “Enclosed” water has to be included in the mass if we are talking about inertia. Center of Buoyancy. A similar differential approach with. displaced mass: b x = 6 ' ix i. ' where. ' is incremental volume, i.
Understanding and calculating marine displacement is essential for the design and operation of ships. This tutorial delves into the formulas and calculations associated with marine displacement, focusing on length, breadth, draft, and block coefficient.
Use 6.0 to 6.5 as a target for LDR in a glass-sandwich built cruising catamaran. To adjust LDR and fully loaded displacement mLDC, change the length/beam ratio of hull, LBR. We can now estimate our empty boat displacement (kg): mLCC := 0.7 ⋅ mLDC. mLCC = 4995.
displacement. In simple terms, for a boat placed in a tank (or body of water) the boat may be oriented in whatever fore and aft angle gives the largest load up to the point that water is just about to enter the boat (the point of down-flooding). To complete in the water testing, the following sources of minor flooding will be sealed. 1.
