(19)
(11) EP 1 923 309 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.05.2011 Bulletin 2011/21

(43) Date of publication A2:
21.05.2008 Bulletin 2008/21

(21) Application number: 07022329.2

(22) Date of filing: 16.11.2007
(51) International Patent Classification (IPC): 
B63H 25/02(2006.01)
B63H 20/12(2006.01)
B63H 25/14(2006.01)
B63H 25/24(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 17.11.2006 JP 2006312172
17.11.2006 JP 2006312161
17.11.2006 JP 2006312184
17.11.2006 JP 2006312228

(71) Applicant: Yamaha Hatsudoki Kabushiki Kaisha
Shizuoka-ken Shizuoka 438-8501 (JP)

(72) Inventor:
  • Mizutani, Makoto c/o Yamaha Marine Kabushiki Kaisha
    Hamamatsu-shi Shizuoka-ken (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Leopoldstrasse 4
80802 München
80802 München (DE)

   


(54) Steering system for a watercraft


(57) The present invention relates to a steering system for a watercraft, comprising: a rudder, in particular an outboard motor (12); a steering device (16) including an actuator, in particular an electric motor (20) configured to change a direction in which the watercraft travels; a steering amount input means, such as a steering wheel (17), operable by an operator, electrically connected to the actuator (20) to provide an actuation signal corresponding to the amount of a steering operation to the actuator (20); and control means (33) for controlling a limit of a rudder deflection angle, the control means (33) including at least one of operation status detection means (38) for detecting an operation status corresponding to the steering operation, running status detection means (39) for detecting a running status of the watercraft, watercraft propulsion unit status recognition means (40) for recognizing a status of a watercraft propulsion unit, such as an outboard motor (12), such as the installation number thereof, and actuator status detection means (41) for detecting a status of the actuator (20); and rudder deflection angle control means (42) for controlling a limit rudder deflection angle based on the detection value from the at least one of the detection and recognition means.







Search report