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Les langues disponibles
If the connection of the thrust tunnel and the ship's hull is to be
made with a sloped side, it should be executed in accordance with
the drawing.
Make the sloped side (C) with a length of 0.1 to 0.15 x D and make
sure that the angle between the tunnel and the sloped side will be
identical to the angle between the sloped side and the ship's hull.
Thruster
'BOW . . . . .'
25 . . .
45 . . .
35 . . .
55 . . .
60 . . .
75 . . .
95 . . .
125 . . . 160 . . .
220 . . . 230 . . . 285 . . . 310 . . .
410 . . . 550 . . .
4
Grid bars in the tunnel openings
Although the thrust force will be adversely affected, grid bars may be placed into the tunnel
openings, for protection of the thruster.
In order to limit the negative effect of this on the thrust and on hull resistance during normal
operation as much as possible, the following must be taken into account:
Do not fit more bars per opening than is in-
dicated in the drawing.
The bars must have a rectangular cross-sec-
tion.
Do not fit round bars.
The bars must overlap a certain amount.
The bars must be installed so that they stand
perpendicular to the expected wave form.
vetus® Installation recommendations for thrusters
D
[mm]
(inches)
[mm]
110
(4
5
/
")
11 ... 17
16
15
125
(4
/
")
13 ... 19
16
150
(5
7
/
")
15 ... 22
8
5
185
(7
/
")
20 ... 30
16
250
(9
13
/
")
25 ... 38
16
300
(11
13
/
") 30 ... 45 (1
16
400
(15
3
/
")
40 ... 60
4
110 mm
125 mm
C
C
(inches)
(
7
/
...
11
/
")
16
16
1
3
(
/
...
/
")
2
4
(
5
/
...
7
/
")
8
8
C = 0.1 x D ... 0.15 x D
3
3
(
/
... 1
/
")
4
16
(1 ... 1
1
/
")
2
3
/
... 1
3
/
")
16
4
(1
1
/
... 2
3
/
")
2
8
2 x
3 x
150 mm
185 mm
ca. 0.7 x 0.7 mm
(
1
/
" x
1
/
")
32
32
min. 20 mm (
3
/
")
4
max. 40 mm (1
1
/
2
3 mm (
1
/
")
8
Overlapping
ENGLISH
β
C
γ
γ
Sharp
β = β
γ = γ
4 x
250 mm
300 mm
400 mm
")
=
α
α : min.
0º
max.
15º
020571.03
β
ø ...
15
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