Trim Tabs; Autopilot - Bayliner 4788 Operation Manual

Operating Manual for Sea Daze 4788 Bayliner
vessel hull design and power plant engineering dictate that higher RPM operation will be less efficient on semi-
displacement hulls. Thus, you will notice from the following table that every knot above "displacement speed"
(about 7 knots) can get expensive.
RPM Gallons/Hour
1000 2.6
1200 6.0
2300 22.0
It is advised to not exceed 2500 rpm except for brief intervals. (High engine speeds cause the engine to overheat
(over 205 degrees) causing damage as well as high fuel consumption).
Always have a sharp lookout posted for logs, deadheads, crab pots or other possible hazards. A log hitting a
prop can ruin your vacation . Debris will tend to gather along current lines. It is often best to go around these
areas and miss the minefields.

3.5.5 Trim Tabs

The Trim Tabs can be effective at bringing the bow to an ideal cruising attitude, or to adjust for a side wind.
CAUTION: Do not press one tab down at the same time you press the other one up. This may blow a fuse.
PLEASE, NOTE: the trim tabs should be operated one at a time (only port or only starboard) using a short
duration on each switch back and forth until the desired attitude is achieved. Allow a few moments after each
duration to determine the effect of the adjustment. Once established at cruise, make minor adjustments and
watch your speed on the GPS to see if it improves, or gets worse. Careful use of the Tabs can improve fuel
efficiency, and poor adjustments can cost extra $$$ in fuel burned.
The trim tabs have a DC circuit breaker. The controls are to the right of each wheel. The trim tabs are for use
at fast speeds only to help trim the bow down over its wave to a planning angle. It can also help level the boat
to either side at lower speeds. Avoid trimming the bow too far down as this can decrease performance.
Whenever you slow down off a plane, turn the tabs all the way up. This can improve handling in trailing seas
and docking. (To determine when they are up or down, individually press each control either up or down and
hold while you count off 15 to 20 seconds)

3.5.6 Autopilot

WARNING -- ALWAYS know the status of autopilot – is it on 'auto' or is it 'standby'? Turning the wheel to
avoid debris, or traffic WILL NOT disengage 'auto' mode -- the boat WILL return to and maintain the set
course. You must press 'standby' mode to disable 'auto' mode. Make certain to set the autopilot into standby
when approaching harbor, docking or close quarters maneuvering or the helm may not respond at all. Refer to
the Raymarine autopilot manual in the cabinet beneath Pilothouse Electrical Panel for more information.
Turn on the Autopilot switch at the power control cabinet.
The Autopilot head unit is located on pilothouse helm portside. The Auto pilot may be operated from the pilot
house directly via the head unit or from the flybridge with the wired remote.
These units aid in maintaining course heading and can be set to follow a pre planned GPS course. The
Raymarine ST 6000 autopilot also provides a rudder angle indicator useful for low speed operations and
differential steering situations. The rudder position indicator is displayed at the bottom of the head unit and on
the remote control display.
Sea Daze 160323.doc
Speed (Knots)
7.0
8.0
17.0
Page 19 of 44
Nautical Miles/Gallon
2.7
1.5
0.8
Last Revision August 11
th
, 2015