Hull

A hull is the watertight body of a ship or boat. Above the hull is the superstructure and/or deckhouse, where present. The line where the hull meets the water surface is called the waterline.

The structure of the hull varies depending on the vessel type. In a typical modern steel ship, the structure consists of watertight and non-tight decks, major transverse and watertight (and also sometimes non-tight or longitudinal) members called bulkheads, intermediate members such as girders, stringers and webs, and minor members called ordinary transverse frames, frames, or longitudinals, depending on the structural arrangement. The uppermost continuous deck may be called the "upper deck", "weather deck", "spar deck", "main deck", or simply "deck". The particular name given depends on the context—the type of ship or boat, the arrangement, or even where it sails. Not all hulls are decked (for instance a dinghy).

In a typical wooden sailboat, the hull is constructed of wooden planking, supported by transverse frames (often referred to as ribs) and bulkheads, which are further tied together by longitudinal stringers or ceiling. Often but not always there is a centerline longitudinal member called a keel. In fiberglass or composite hulls, the structure may resemble wooden or steel vessels to some extent, or be of a monocoque arrangement. In many cases, composite hulls are built by sandwiching thin fiber-reinforced skins over a lightweight but reasonably rigid core of foam, balsa wood, impregnated paper honeycomb or other material. he term hull refers to the body or frame of a ship or starship. Warp-worthy vessels must have a hull able to withstand extreme accelerations. The hull of a Starfleet vessel was usually separated into two parts: The primary and secondary hulls.

Borg cubes utilized technology that automatically regenerated their hull when damaged. (TNG: "Q Who")
Contents
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Hull materials Edit

Duranium
Electroceramic
Kelindide
Magnesite
Monotanium
Neutronium
Polyduranide alloy
Tetraburnium
Titanium
Tritanium
Trititanium
Victurium

Hull enhancements Edit

Ablative generator
Ablative hull armor
Dispersive armor
Monotanium armor plating
Parametallic hull plating
Polarized hull plating
Reactive armor
Trellium-D

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