MaxSea Operator Manual version 12.6 - Furuno USA

MaxSea Operator Manual version 12.6
The polar Window appears on middle of the screen and it 's divided in three parts of information :
First part of the window shows you a table which contains characteristic values:
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• Target Speed: the target speed is equal to the theoretic speed of the yacht, as suggested by the polar file
(dependent on the wind force and the boat's course), and with the actual current wind bearing taken into
account.
• TWA:True Wind Angle
• VMG Max.:VMG when heading into the wind close-hauled and when heading downwind.
• Opt. Tack:the optimum tack angle (close-hauled), together with its corresponding speed
• VMC Rate: this value is equivalent to the current speed towards the waypoint in comparison to the potential
speed (as protracted by the current polar).
• VMG Rate:efficiency, measured as a percentage and this value equals the measured VMG (near or tail wind) in
comparison to the target VMG (as protracted by the polar values).
Second part of the window gives you a table which contains characteristic values: