CORRECT CRAFT super air 230 2018 Owner's Manual page 220

Section 5
Nautique Integrated Steering
Assist (NISA)
Nautique Integrated Steering Assist (NISA) utilizes a stern thruster
mounted on the transom of the boat to supplement the steering in
forward and reverse as well as helping to reposition the boat at rest.
Just like a boat propeller, the thruster propeller rotates at a high
rate of speed. To avoid serious injury or death from the rotating
propeller, you should not approach the ladder or swim platform
while it is in operation and the operator should shut the engine off
when near persons in the water. Even though the propeller is
contained within a tunnel, when the thruster is being operated
there is a large volume of water pulled through the tunnel by the
propeller which results in the potential for limbs to be pull towards
the blades. Please see the LINC Panoray user manual for details
and best practices for using NISA.
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