Step-By-Step Instructions: Transom or
Swim Platform Mounting
STEP 1: DETERMINE WATERLINE
The top of the propeller must be at least 5 inches (12 cm) below the
waterline, so determining the actual waterline is a crucial first step to
installation.
NOTE: Be sure to determine the shallowest waterline with an empty boat
to ensure thruster placement will keep the top of the propeller a
minimum of 5” (12 cm) below the waterline in all conditions.
The water stain on the hull is a good indication of waterline over a range
of conditions. Use the lowest indication of waterline location if a water
mark is visible.
If no water stain is visible, the waterline must be marked while the hull is
in the water. With the boat completely unloaded (fuel tanks empty but
standard equipment in place), mark the waterline on the transom with a
grease pencil.
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