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2. Ship measurements - Wikipedia

   en.wikipedia.org/wiki/Ship_measurements

   Used mainly to determine the minimum water depth for safe passage of a vessel and to calculate the vessel's displacement (obtained from ship's stability tables) so as to determine the mass of cargo on board. Draft, Air – Air Draft/Draught is the distance from the water line to the highest point on a ship (including antennas) while it is ...

3. Strength of ships - Wikipedia

   en.wikipedia.org/wiki/Strength_of_ships

   The strength of ships is a topic of key interest to naval architects and shipbuilders. Ships which are built too strong are heavy, slow, and cost extra money to build and operate since they weigh more, whilst ships which are built too weakly suffer from minor hull damage and in some extreme cases catastrophic failure and sinking.

4. Frame (nautical) - Wikipedia

   en.wikipedia.org/wiki/Frame_(nautical)

   In steel shipbuilding, the entire frame can be formed in one piece by rivetting or welding sections; in this case the floor remains a separate piece, joining the frame on each side to the keel. Frame numbers are the numerical values given to the frames.

5. Metacentric height - Wikipedia

   en.wikipedia.org/wiki/Metacentric_height

   The maximum righting moment is the maximum moment that could be applied to the vessel without causing it to capsize. The point of deck immersion is the angle at which the main deck will first encounter the sea. Similarly, the downflooding angle is the angle at which water will be able to flood deeper into the vessel.

6. Deflection (engineering) - Wikipedia

   en.wikipedia.org/wiki/Deflection_(engineering)

   The deflection must be considered for the purpose of the structure. When designing a steel frame to hold a glazed panel, one allows only minimal deflection to prevent fracture of the glass. The deflected shape of a beam can be represented by the moment diagram, integrated (twice, rotated and translated to enforce support conditions).

7. Hogging and sagging - Wikipedia

   en.wikipedia.org/wiki/Hogging_and_sagging

   Hogging is the stress a ship's hull or keel experiences that causes the center or the keel to bend upward. Sagging is the stress a ship's hull or keel is placed under when a wave is the same length as the ship and the ship is in the trough of two waves.