Boston Whaler 20 Justice Series, Operation & Maintenance Manual

Page: 87 / 140

4-15
Boat Systems Section 4
4-15
Boat Systems Section 4
4-15
Boat Systems Section 4
4-15
Boat Systems Section 4
4-15
Boat Systems Section 4
Proper Boat Trim
All boats “break over” or get on plane at a particular
speed. This speed is determined by load distribution,
water conditions, and other factors. Trim tabs allow
your boat to plane at speeds below the natural planing
speed. By pressing the control to the BOW DOWN
position, your trim tabs move down. This will raise
your stern and lower your bow, getting the boat on
plane sooner.
When learning to use trim tabs, begin by pressing the
control switches in ½ second bursts for gradual trim-
ming. A momentary delay occurs from the time you
move the control switches to the time the boat reacts.
This is normal and varies with boat speed. Be careful
not to over-trim the boat. An over-trimmed boat will
“plow” or “bow-steer”. If you over-trim the boat, push
both trim switches back to raise the bow.
Rough Water
When running in chop or heavy seas, press both
switches forward to lower the bow elevation. This will
bring the “V” of the hull in more contact with the waves
and reduce the pounding effect.
!
WARNING
The boat’s attitude and steering effort can react
very quickly to changes in trim tab position.
Adjust trim tab deployment in small increments
to avoid loss of boat control.
!
WARNING
Do not over-trim, particularly at high speeds, as
the bow will dig in and wave action might cause
the boat to veer. While underway, do not move
one trim tab significantly farther down than the
other, as undesirable listing will occur.