Weight Distribution
The location of the longitudinal center of gravity is of
great importance for trim angle at top speed etc. Gen-
erally speaking, a fast boat should have its center of
gravity further aft than a slower boat.
The center of gravity has great influence on a boat's
static and dynamic stability. It is therefore important to
consider CoG position both when the boat is loaded
and unloaded.
It is important that heavy components such as engines,
fuel and water tanks and batteries be located such that
the best possible trim is achieved when the boat is in
the water, and generally that as low a vertical CoG as
possible is attained.
Fuel and water tanks must be located longitudinally as
close to the center of gravity as possible in order that
the center of gravity is not moved when water and fuel
levels change.
It is an advantage not to locate the fuel tanks in the
vicinity of the hot engine compartment. If possible, the
batteries must be located in a separate, well-ventilated
section.
Clearance Around Propulsion Units
Objects that protrude from the hull bottom cause tur-
bulence. If such are present in the vicinity of the drive
units, propeller propulsion ability will be impaired.
Place no objects inside the dashed lines.
A
min. 3000 mm
(118")
B
min. 400 mm
(16")
C
min. 50 mm
(2")
Clearance between hull and Ips drive unit is 9 mm
(+ 5 mm - 2 mm)
A
B
P0005314
Figure A
shows an installation with good weight distribution and trim
angle.
Figure B
shows an incorrect installation with poor trim angle as the
result.
A
B
B
P0006153
P0019672
C
Arrangement and Planning, Engine Placement
18
47704162 10-2014 © AB VOLVO PENTA
Summary of Contents for IPS650
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