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Floating dry dock system

A technology of dry dock and buoyancy, applied in dry dock, slipway, ships, etc., can solve the problems of not being able to lift the ship quickly, unstable design, etc.

Inactive Publication Date: 2006-12-06
WELCOME INN INVESTMENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional dry dock systems are not capable of quickly lifting a vessel due to the unstable design of the "waterplane" issues described above

Method used

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  • Floating dry dock system
  • Floating dry dock system

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Embodiment Construction

[0021] specific implementation

[0022] Referring to FIG. 1 , there is shown a dry dock 10 having two lifting outriggers 11 mounted on a common floating bed 12 . However, it should be understood that the invention may also be applied to situations where only one elevating cradle is provided on the foundation. Only one support 11 will be described in detail below, but it should be understood that the other support 11 is identical or similar, unless otherwise stated in the text.

[0023] Referring specifically to Fig. 1, the base 12 is a catamaran with elongated double hulls, made of lightweight marine alloy or steel. Base 12 may be a monohull or cylindrical buoy or other floating structure, such as a trimaran.

[0024] Engines, propulsion equipment (not shown) and all control and service components 13 which guide the base 12 to a position adjacent to the vessel requiring lifting are placed on the base 12 . The service unit 13 includes pumps (to be described below) and other ...

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PUM

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Abstract

A floatable dry dock (10) comprising a lifting cradle (11) having two spaced arms (15) pivotally mounted on a buoyant base (12) and, one or more flotation tanks (16, 17,18, 19, 20) interconnecting the arms (15). A platform (22) is mounted on the arms (15) and a platform support means (25, 26) is operable to ensure that the platform (15) remains horizontal when the arms (15) pivot about their pivotal attachment to the base (12).

Description

technical field [0001] The present invention relates to a dry dock system for lifting a vessel out of the water for maintenance or repair. Typically a dock of this type can lift anything from one to several hundred tons. Background technique [0002] There are basically two types of dry docks. There is a system comprising a lock with at least one closeable door in which the vessel can be floated while water is drained from the lock to raise and dry the vessel. [0003] A second type of dry dock system includes a floating dock consisting of buoyant rafts that float in front or behind the vessel and submerge beneath the vessel. The rafts have buoyancy chambers built into the walls of the raft that can be air drained to remove stored water. The main problem with this type of dock is that the required "water plane" values ​​make this type of dock highly unstable. "Waterplane" is defined as the area above water at the interface between water and air that is excluded by the do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63C3/06B63C1/02
CPCB63C1/02B63C3/06
Inventor D·S·汤姆D·盖雷
Owner WELCOME INN INVESTMENTS