30
484164/A
Use a suitable toe-in angle
The primary consideration for any transducer installation must be to allow laminar water
flow. In most cases this is achieved by designing the blister in parallel with the keel.
However, if the blister is located close to the bow, the front of the blister should have a few
degrees "toe-in" towards the bow.
A
Keel
B
Blister
C
Toe-in angle
The angle must be chosen to allow
for most efficient water flow It will
vary with the location of the transducer;
the depth below the hull, the distance
from the bow, and the distance to the
keel. Typical angles are from 0 to 3° on deplacement hulls. On planing hulls, the angle is
normally close to 0°.
Related topics
Preparations, page 22
Transducer installation principles, page 27
Transducer installation in a flush mounted steel tank
The transducer can be flush mounted on large vessels, where the size of the hull prevents
air bubbles from reaching down to the transducer face. Flush mounting can also be used
on vessels operating in shallow harbours or waters, where a protruding blister can not be
accepted.
The standard method for flush mounting on a steel vessel is to weld a steel tank inside the
hull, and mount the transducer into this tank.
This can be accomplished by air release through a steel tube. This tube should be extended
either to open air 1.5 m above the water line, or to the water outside the hull at a point
higher than the tank interior.
If the tube is extended to open air, drainage must be provided with a controlled leak through
the transducer flange or by means of a separate hole in the tank bottom.
Simrad CP200-5C Installation Manual
Summary of Contents for Simrad CP200-5C
Page 1: ...Photo by Gatis Marcinkevics kongsberg com simrad Simrad CP200 5C INSTALLATION MANUAL ...
Page 2: ......
Page 55: ...484164 A 53 Related topics Preparations page 22 Acoustic noise page 45 Preparations ...
Page 58: ...56 484164 A Related topics Preparations page 22 Simrad CP200 5C Installation Manual ...
Page 101: ...484164 A 99 Drawing file ...
Page 110: ... 2022 Kongsberg Maritime ...