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4
Installation recommendations
4.1
Positioning of the thruster tunnel
Several installation examples.
To achieve the optimum performance, position the thruster tunnel as
far forward as possible.
If, in addition to controlling the movement of the bow, the stern of
the vessel is required to move sideways, then a second thruster may
be installed at the stern.
For a planing boat the tunnel
should, if possible, be so situated
so that when the vessel is plan-
ing it is above the water level thus
causing no resistance.
Installation of two bow thrusters
in tandem (for larger boats). In
this case, depending on weather
conditions, one or both bow
thrusters may be used.
We do not advise fitting 2 bow thrusters into one tunnel; this does
not result in doubling the thrust!
vetus® Operation manual and installation instructions bow thrusters BOW7512D and BOW7524D
Set-up: 2 bow
thrusters in a
catamaran
t
:
ip
When choosing the location for the thrust tunnel, take the following
into account for optimum performance:
- The distance A shown in the drawing must be at least 0.5 x D
(where D is the tunnel diameter).
- The length of the tunnel (distance B) should be between 2 x D
and 4 x D.
D
D = 185 mm (7
A
A = 100 mm (4")
B = 370...740 mm
(15...30")
4.2
Positioning of the bow thruster in the thrust-tunnel
When determining the
exact position of the bow
thruster in the thrust tun-
nel, the tailpiece MUST
NOT protrude from the
tunnel end.
The propeller should preferably be situated on the centreline of the
vessel, but it must always be accessible from the outside.
180º
Max. bilge
water level
- The electric motor can be installed in various positions.
- If the motor is set up horizontally or at an angle, support is abso-
lutely essential.
- The electric motor must be positioned in such a way that it is al-
ways well clear from the maximum bilge water level.
ENGLISH
A
5
/
")
16
=
=
B
<60º
020536.06
D
17
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