Regal 3300 Owner's Manual page 183

Using The Thruster:
To use the thruster first make sure the battery switch is activated.
As part of the thruster system there is a joystick on the helm. The
thruster will assist in slow speed maneuvering especially around a dock
or close mooring situations. It operates similar to a gaming or marine
engine joystick.
To activate the joystick, push and hold the black button. The red icon
will illuminate.
• Never run the thruster dry; it will weld the relay contacts as it
becomes a generator in spool down.
• Do not make quick changes from one direction to the other
direction, or it will damage the unit.
The minimum running voltage for the thruster is 10.5 volts; therefore
the outboard engine(s) should be running to maintain this voltage
requirement.
There is an in-line ANL fast activation fuse for overcurrent protection
behind the thruster switch panel.
Refer to the equipment manufacturer's manual for additional
information.
https://www.boat-manuals.com/
Features
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