Basic Hull Design Issues

Tim Lovett Mar 04, May 05 | Home | Menu

Noah's Ark Design Parameters

The Ark is not supposed to sink, so hull integrity and stability are essential. It is prudent to ensure a safe margin in any sea state likely to be encountered, especially considering the magnitude of the floodwaters and the (presumed) novelty of the vessel. Both these factors would drive the project to use a high safety factor - to err on the conservative side. The job had to be done thoroughly.

1. Hull integrity

    Watertightness (E) The ship must not leak excessively, or take water onboard. A sound hull, storm hatches etc

    Strength (E) The ship must not break in half or flex in rough seas. Wave bending moment, wave slamming, torsion etc.

2. Seakeeping

    Stability (E) The ship must not capsize - a combination of roll stability and broaching avoidance.

    Seakindliness (D) The ship motions should easy on its crew and gear. Accelerations, angle of roll etc

3. Voyage Requirements

    Essential needs met (E) The ship must meet the essential needs of cargo and crew during the voyage, Space, ventilation etc

    Risks Managed (D) Fire hazards, access and handling issues, repairs etc.

4. Construction

    Buildable (E) It must be possible to construct the ship using available technology. Wood construction, manual labor etc

    Costs Optimized (D) The ship should require a minimum of materials and labor without jeopardizing any of the essential criteria.

 

(E) = Essential, (D) = Desirable.


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