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1. (AU1998067521) Device for increasing the steering effect of a rudder

Office : Australia
Application Number: 67521/98 Application Date: 19.03.1998
Publication Number: 1998067521 Publication Date: 03.12.1998
Publication Kind : A
Prior PCT appl.: Application Number:NO1998000087 ; Publication Number: Click to see the data
IPC:
B63H 25/38
B63H 25/46
B63H 25/52
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
H
MARINE PROPULSION OR STEERING
25
Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
06
Steering by rudders
38
Rudders
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
H
MARINE PROPULSION OR STEERING
25
Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
46
Steering or dynamic anchoring by jets
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
H
MARINE PROPULSION OR STEERING
25
Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
52
Parts for steering not otherwise provided for
Applicants: Den Norske Stats Oljeselskap A.S.
Inventors: Samuelsen, Arild K.
Priority Data: 971368 24.03.1997 NO
Title: (EN) Device for increasing the steering effect of a rudder
Abstract:
(EN) Arrangement for enhancing the steering effect of ship rudders (5) comprising at least one passageway for supplying seawater from a pump to ducts (11) in the rudder, and means (20) communicating with the ducts and being adapted to discharge seawater supplied through these at the rudder surface. Said means comprise a profile element (20) extending preferably vertically at the leading edge of the rudder (5) and being pivotable about a generally vertical axis to extreme positions at either side with respect to the central plane of the rudder. Moreover, there are provided distribution ducts (12A, 12B) which in association with the profile element (20) are adjustable so that the profile element by opposite pivot movement in relation to the angular deflection of the rudder causes seawater to be discharged (12X) along the rudder surface (5B) facing abaft at said angular deflection.
Also published as:
KR1020010005615ES2191290EP0970002US6085680JP2001516305 CN1251071
DE000069810598WO/1998/042565