2 - G
ENERAL
I
NFORMATION
16
90-8M0114811 JANUARY 2016
1. Examples of poor ventilation while the boat is stationary:
a -
Operating the engine when the boat is moored in a
confined space
b -
Mooring close to another boat that has its engine operating
2. Examples of poor ventilation while the boat is moving:
a -
Operating the boat with the trim angle of the bow too high
b -
Operating the boat with no forward hatches open (station
wagon effect)
W
AVE
AND
W
AKE
J
UMPING
Operating recreational boats over waves and wake is a natural part of
boating. However, when this activity is done with sufficient speed to
force the boat hull partially or completely out of the water, certain
hazards arise, particularly when the boat enters the water.
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a
b
a
b
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The primary concern is the boat changing direction while in the midst
of the jump. In such case, the landing may cause the boat to veer
violently in a new direction. Such a sharp change in direction can
cause occupants to be thrown out of their seats, or out of the boat.
!
WARNING
Wave or wake jumping can cause serious injury or death from
occupants being thrown within or out of the boat. Avoid wave or
wake jumping whenever possible.
There is another less common hazardous result from allowing your
boat to launch off a wave or wake. If the bow of your boat pitches
down far enough while airborne, upon water contact it may penetrate
under the water surface and submarine for an instant. This will bring
the boat to a nearly instantaneous stop and can send the occupants
flying forward. The boat may also steer sharply to one side.
I
MPACT
W
ITH
U
NDERWATER
H
AZARDS
IMPORTANT: Operating in shallow waters can severely damage the
boat or power package. Maintain a minimum safe speed when
operating the vessel in shallow waters or in areas with underwater
obstacles.