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A ship hull and method of manufacturing such a hull

A technology for ship hulls and ships, applied in the direction of ship hulls, ship construction, hull components, etc., can solve problems such as rupture, outer shell deformation, leakage, etc.

Inactive Publication Date: 2007-02-28
FAGERDALA THIGER MARINE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem of local deformation and rupture of the outer shell caused by the deformation of the outer shell of the ship and leakage is still not solved

Method used

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  • A ship hull and method of manufacturing such a hull
  • A ship hull and method of manufacturing such a hull
  • A ship hull and method of manufacturing such a hull

Examples

Experimental program
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Effect test

Embodiment

[0084] Before deformation occurs, the density is 100kg / m 3 The foam PVC can withstand 280ton / m 2 load. In this case, no surface layer is required on the upper surface of the foamed plastic material. The density is 200kg / m 3 The foam PVC can withstand 500ton / m 2 load.

[0085] When deformation occurs, the outer layer begins to deform first, and to further deform the foam, the pressure must be doubled. This fact, combined with a hardened surface layer on the foam surface which distributes the pressure over a larger area, makes it possible that the energy absorption capacity of the structure according to the invention is exceptionally high.

[0086] Additional advantages can be brought about when using foamed polypropylene or foamed polyethylene. After compression, the foamed plastic material recovers almost to its original thickness, but this is also somewhat dependent on the nature of the damage.

[0087] Another advantage brought about by the present invention is related...

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Abstract

A ship hull, especially intended for oil and chemical ships, passenger ships are fishing ships, comprising a hull made of steel or aluminium built on a supporting structure of frames, stringers and longitudinals, having improved buoyancy and energy absorbing capability, and a method of manufacturing such a ship. Between an outer hull (200) and an inner hull (202) a layer (204) of a cellular plastic material is applied having chiefly closed cells. The outer hull is made of a high strength steel, wherein at external strain the outer hull and the cellular plastic material are adapted to jointly constitute an energy absorbing deformation zone.

Description

technical field [0001] The present invention relates to a ship hull with a double hull, especially suitable for oil tankers, chemical ships, passenger ships and fishing boats, and a method of manufacturing such a hull. Background technique [0002] Regardless of purpose, the hulls used by merchant ships today are invariably single or double-layer hulls formed of frame steel plates, longitudinal stiffeners and stringers. However, international regulations favor double hulls for enhanced security. Usually the distance between the outer shell and the inner shell is 3m. The skeleton is placed between the shells. [0003] While a double hull would significantly increase safety in the event of a low energy ground impact impact, this solution is far from optimal. This construction is very expensive, and the lack of back pressure from the water body on the inner shell makes the tension problem more prominent, and because the steel plate area is significantly larger, about 2.5 tim...

Claims

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Application Information

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IPC IPC(8): B63B3/20B32B15/08B63B
CPCB32B15/08B63B3/20
Inventor S·约恩松
Owner FAGERDALA THIGER MARINE SYST
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