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1. (WO2013122516) USE OF CENTER ENGINE FOR DOCKING

Pub. No.:    WO/2013/122516    International Application No.:    PCT/SE2012/050155
Publication Date: Fri Aug 23 01:59:59 CEST 2013 International Filing Date: Wed Feb 15 00:59:59 CET 2012
IPC: B63H 21/21
B63H 20/12
B63H 25/02
Applicants: CPAC SYSTEMS AB
LINDEBORG, Mathias
Inventors: LINDEBORG, Mathias
Title: USE OF CENTER ENGINE FOR DOCKING
Abstract:
The present invention relates to a marine propulsion control system (9) for controlling a set of propulsion units (6, 7, 8) carried by a hull (2) of a vessel. The invention is based on the realization that cavitation typically occurs on the propulsion unit with reverse gear engaged, and that in a triple propulsion unit installation the normally idle center propulsion unit can be used to increase the reverse thrust and thereby limit the RPM of propulsion units in reverse, so that the cavitation effect is limited, and simultaneously allow for higher forward thrust on the third propulsion unit, thus increasing the total thrust for the vessel.