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1. (WO1992010396) WATERCRAFT HULL MODIFICATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/010396 International Application No.: PCT/GB1991/002148
Publication Date: 25.06.1992 International Filing Date: 04.12.1991
Chapter 2 Demand Filed: 03.07.1992
IPC:
B63B 3/20 (2006.01) ,B63B 25/08 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B
SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
3
Constructions of hulls
14
Hull parts
16
Shells
20
of double type
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B
SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
25
Load-accommodating arrangements, e.g. stowing or trimming; Vessels characterised thereby
02
for bulk goods
08
fluid
Applicants:
STUART, William [GB/US]; US
Inventors:
STUART, William; US
Agent:
MOON, Donald, Keith ; Brewer & Son Quality House Quality Court Chancery Lane London WC2A 1HT, GB
Priority Data:
9026444.105.12.1990GB
9109719.603.05.1991GB
Title (EN) WATERCRAFT HULL MODIFICATION
(FR) PROCEDE PERMETTANT DE MODIFIER LA COQUE D'UN BATEAU
Abstract:
(EN) A method of constructing or modifying a watercraft (10) comprises the step of fitting to a main hull (14) of the watercraft an outer hull structure (15) which includes or which forms an outer hull skin (22) by attaching the outer hull structure (15) to the external surface of the main hull (14) of the watercraft. The outer hull structure (15) provides fluid containment spaces (155) between the outer hull skin (22) and the main hull (14) and a communication is provided for flooding the spaces (155) with water from the body of water within which the craft moves. The fluid containment spaces (155) extend above the waterline of the watercraft and means are provided for supplying a pressurised inert gas and/or for applying vacuum pressures to preselected sections of the outer hull structure (15) so that the water levels in those sections can be brought above or below the waterline of the watercraft to increase the overall ballast effect or the buoyancy or to alter the trim of the watercraft (10).
(FR) Un procédé permettant de construire ou de modifier un bateau (10) comprend une étape d'adaptation d'une structure de coque extérieure (15) à la coque principale du bateau. Cette structure extérieure comprend ou forme un revêtement de coque extérieure (22) grâce à sa fixation à la surface extérieure de la coque principale (14) du bateau. Elle (15) possède des volumes pouvant contenir du fluide (155) ménagés entre le revêtement de coque extérieur (22) et la coque principale (14) et une liaison permettant d'inonder lesdits volumes (155) à l'aide de l'eau déplacée par le navire durant le parcours. Les volumes (155) dépassent de la ligne de flottaison et des moyens permettent d'alimenter en gaz inerte sous pression et/ou en vide des sections présélectionnées de la structure de coque extérieure (15) de telle sorte que l'on puisse ramener le niveau d'eau dans lesdites sections au-dessus ou au-dessous de la ligne de flottaison du bateau. Ceci a pour effet d'augmenter l'effet de lest global ou la flottabilité ou de modifier l'assiette du bateau (10).
Designated States: AU, BR, CA, FI, JP, KP, KR, NO, PL, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0559806US5477797AU1991089436