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Double bottom

Index Double bottom

A double bottom is a ship hull design and construction method where the bottom of the ship has two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is somewhat higher in the ship, perhaps a few feet, which forms a redundant barrier to seawater in case the outer hull is damaged and leaks. [1]

10 relations: Beam (structure), Bulkhead (partition), Double hull, Double-hulled tanker, Girder, Gooseneck (piping), Hull (watercraft), MARPOL 73/78, Ship, SOLAS Convention.

Beam (structure)

A beam is a structural element that primarily resists loads applied laterally to the beam's axis.

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Bulkhead (partition)

A bulkhead is an upright wall within the hull of a ship or within the fuselage of an aeroplane.

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Double hull

A double hull is a ship hull design and construction method where the bottom and sides of the ship have two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is some distance inboard, typically by a few feet, which forms a redundant barrier to seawater in case the outer hull is damaged and leaks.

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Double-hulled tanker

A double-hulled tanker refers to an oil tanker which has a double hull.

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Girder

A girder is a support beam used in construction.

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Gooseneck (piping)

A gooseneck (or goose neck) is a 180° pipe fitting at the top of a vertical pipe that prevents entry of water.

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Hull (watercraft)

The hull is the watertight body of a ship or boat.

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MARPOL 73/78

The International Convention for the Prevention of Pollution from Ships, 1973 as modified by the Protocol of 1978 (MARPOL 73/78, MARPOL is short for marine pollution and 73/78 short for the years 1973 and 1978) is one of the most important international marine environmental conventions.

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Ship

A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying passengers or goods, or in support of specialized missions, such as defense, research and fishing.

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SOLAS Convention

The International Convention for the Safety of Life at Sea (SOLAS) is an international maritime treaty which sets minimum safety standards in the construction, equipment and operation of merchant ships.

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References

[1] https://en.wikipedia.org/wiki/Double_bottom

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