Section 3 - On the Water
90-866938081 MAY 2009 Page 39
TO SPIN THE BOAT ON ITS AXIS AT LOW SPEEDS
1. Center the steering wheel.
2. To spin to the right, place the starboard engine in reverse and the port engine in
forward.
3. To spin to the left, place the port engine in reverse and the starboard engine in
forward.
4. To increase the rate of turn, simultaneously adjust each ERC lever for more throttle.
Maneuvering with the Joystick
The joystick provides single lever interface to maneuver the vessel. Operating the vessel
with the joystick is well suited for close quarter operations and when docking. The joystick
causes the control system to independently control each pod angle and thrust to move or
rotate the boat in a desired direction. For example, if you move the joystick sideways, the
control system commands the boat in the sideways direction.
The joystick gives three axis control: fore and aft, port and starboard, and rotational, or any
combination thereof. For example, moving the joystick to port causes the boat to move
sideways to port. Rotating the joystick causes the boat to rotate around its center. You can
move and rotate the joystick at the same time, allowing for very intricate movements for
maneuvering in tight quarters.
The control system automatically attempts to dampen bow and stern swinging (referred to
as yaw) during joystick operation. An on‑board sensor measures the yaw rate of the boat
and actively counteracts the yaw motion of the boat. Factors, such as wind, water
conditions or vessel loading, may act upon the vessel beyond the systems capability to
correct yaw. Manual yaw correction may be required when commanding the boat in the
fore and aft, port and starboard, or diagonal directions. To correct for unintended yaw
during any maneuver just rotate the joystick in the direction the bow is desired to rotate.
The following table gives some limited examples of the basic responses to inputs from the
joystick. The joystick is proportional, which means that the farther from the center the
joystick is moved, the more thrust is applied to the boat in that direction.
To maneuver the boat with the joystick:
1. Move both electronic remote control (ERC) levers to the neutral position.
2. Move the joystick in the direction that you want the boat to move, or twist the joystick
in the direction that you want the boat to rotate. The joystick can be moved and rotated
at the same time.
Joystick Input and Boat Response Table
Joystick Input
Boat Response
Movement
(shown from light gray to dark gray)
24704
Boat at rest
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