TM 5-1940-321-13&P
( 2 ) Capsizing. If a capsize is imminent and there is time, the crew should try to do the
following:
(a) The coxswain should shut off the motor by pulling the kill clip lanyard.
(b) On the coxswain s command, the crew should enter the water holding the upper
grab lines on the high side of the craft in an attempt to use their weight to prevent
capsizing.
(c) As the craft capsizes, all crew should try to stay clear of the craft to avoid being
struck and injured. Crew should protect their heads with their arms. The outboard
engine in particular can inflict injury.
( 3 ) Righting the F530 IAB. A broaching line can be easily made by using 25 feet of
1/2 inch diameter nylon rope. At one end of the line, attach a snap link in the loop
of a figure-eight knot. Attach the snap link on the inside bow D-ring. Run the
remainder of the line through the port side bow towing D- ring, and then run the line
to the port stern towing D-ring where it is attached. After capsizing, the broaching
line is located and slackened. Righting the F530 IAB is accomplished by couching
on the upside down craft, feet on the starboard side and hands on the broaching
line. Standing upright while leaning backward and holding the broaching line will
right the craft. Sometimes a vacuum will form under a capsized craft that makes it
difficult to break loose from the water. Swimming to the stern and squeezing open
the self-bailers to allow air to enter the capsized craft can eliminate the vacuum.
CAUTION
Do not attempt to start an engine that has been submerged until it has been
dewatered in accordance with the manufactures operation manual.
b. Bailing. The craft should be bailed as necessary to remove water. Water adds weight and
reduces performance. The weight of large amounts of water can severely affect handling. The F530 IAB is
equipped with two self-bailers as described in chapter 3, paragraph 3-4b. The self-bailers work automatically
when the boat is moving and water is present inside the craft. The design of the self-bailer opening prevents
water from entering the craft but allows any water in the craft to flow out. When operating in the surf zone,
large amounts of water may enter the craft. This water must be removed quickly to restore performance and to
negotiate the breaking waves. Water can be removed more quickly by shifting crew weight aft and accelerating
to approximately 10 knots. This will give the craft a bow up attitude, and some of the water will flow out over
the transom as well as through the self-bailers.
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