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7-3
The effects of unequal propeller thrust, wind and current must also
be kept in mind. While wind and current may not always be
present, experienced boaters will use them to their advantage.
Unequal thrust is an aspect shared by all single-engine propeller-
driven watercraft.
The 226 has a clockwise rotation propeller which tends to cause the
boat, steering in the straight ahead position, to drift to starboard
when going forward, or going backward. At high speed, this effect
is usually unnoticed, but at slow speed, especially during backing, it
can be powerful. For this reason, many veteran boaters approach
the dock with the port side of the boat toward the dock, if possible.
The 210, 211, 220 and 236 have a counterclockwise rotation
propeller which tends to cause the boat, steering in the straight
ahead position, to drift to port when going forward or backward. At
high speed, this effect is usually unnoticed, but at slow speed,
especially during backing, it can be powerful. For this reason, many
veteran boaters approach the dock with the starboard side of the
boat toward the dock, if possible.
Stopping (checking headway) is a technique that must be
developed. Reverse thrust is used to slow and stop the boat. The
momentum of the boat will vary according to the load as well as the
speed. Make it a practice to slow to idle (no-wake) speed before
shifting into reverse.
It is best to learn maneuvering skills in open water away from traffic.
Adequate practice is the only way to develop your boating skills.
Tow Pattern
A large loop pattern is preferred for beginners. This pattern does
not require the skier to cross the wake. As the skier’s skills improve,
a looped end or dumb bell pattern may be used. The dumb bell
pattern provides a long straight course which allows the wake to
disperse, leaving the skier with a smooth water surface. The dumb
bell pattern is popular with ski tournaments and clinics.
Running
Naut Air Sec 7.qxd 8/29/06 4:23 PM Page 7-3