2-5. LAUNCHING, CALM WATER-Continued
Do not submerge the boom winch when
positioning transporter. Damage to winch
e. Back the transporter into the water until the boom clears
the water by approximately 12 inches (31 cm).
Boom must clear water by roughly 12 inches
f. Disengage dolly retainer.
Failure to engage both the parking brake and
the brake lock could result in injury or death.
g. Apply transporter service brake; place the transmission in
neutral, engage the parking brake and the brake lock. Engage
transporter power take-off. Set the hand throttle to operate the
engine at 1700 RPM. Refer to TM 5-5420-209-12.
h. At the transporter boom controls, push the lever to
disengage the forward locking pin. Use the boom control to raise
the boom about 3 feet.
i. Push the winch control (middle) lever to pay out the boom
cable and allow the cradle to slide into the water. The stern of the
boat will enter the water when the end of the boat cradle is
submerged. The cradle will begin to tilt when the center of
gravity passes the rollers on the rear support. Continue to pay
out the boom cable and adjust the boom elevation until the end of
the cradle rests on the stream bottom. When the cradle bottoms,
the rear stanchions must show six inches length remaining above
water but not more than two feet. If not, the truck with boat must
be relocated and the launch procedure attempted again.