Trim Of The Engine (Boat Pitch) - Ockelbo B21 CAB Owner's Manual

2.6.1 Trim of the engine (boat pitch)

The outboard engine has a built-in trim and tilt function. The trim adjusts the angle of
the propeller versus the boat transom. See also chapter 4.6.
1. Trim Up
2. Neutral
3. Trim Down
The engine trim is used to adjust the bow up or down (the so-called pitch) while the
boat is under speed. A well-adjusted engine trim will maximize safety and comfort, and
will minimize fuel consumption.
Mastering the trim requires some practice so if you are uncertain, ask someone
experienced for help. Correct trim is very important for a safe, comfortable and fuel
economic ride, and for fast acceleration.
The basic directions to find optimal trim are as follows, and shall be done during flat
water conditions:
Accelerate to planing speed (approximately 10 to 15 knots depending on
conditions):
 Engine trim is used to help the boat accelerate as fast as possible from zero to
planing speed, with an optimal pitch. Fast acceleration to planing saves fuel and
improves the view.
 Engine trim shall be at maximum trim down position directly at the start.
 As the boat accelerates and reaches planing speed, the trim is changed from the
trim down up to neutral trim, to keep the bow level or at a slight upward angle.
Failure to do so causes the bow to plough deep into the water, preventing the
boat to pick up speed and run safely.
2. OPERATING THE BOAT__PAGE 16