Kongsberg EM 2040 MKII, Руководство по установке

Страница: 44 / 248

44
472405/A
Flush mounted
With the flush mount method the transducers are installed inside the ship's hull.
This method exposes the transducers to passing air bubbles which might affect the
system performance. The benefit of a flush mounted installation is that nothing protrudes
from the keel. This solution is mainly used for deep water multibeams on ice classed
vessels with additional Ice protection.
The transducer arrays may be mounted flush with the vessel’s hull. In order to do this,
the shipyard must design a framework inside the hull to support the casings. The arrays
must then be mounted so that their faces are flush with the outer hull.
Vents with sufficient capacity must be installed in the casings to prevent any air to be
trapped and to avoid back pressure behind the transducers.
Note
This installation method may prove unsuccessful due to aerated water blocking the
signal path to and from the transducers. Thorough research on the vessel’s hull design
and the acoustic conditions must be made before attempting this installation method.
The transducers must be installed flush with the surrounding surface area to ensure
best possible performance of the system.
Note
The installation shipyard must provide all necessary installation drawings.
If required, all drawings and documents must be approved by the vessel’s national
registry and corresponding maritime authority and/or classification society.
Such approval must be obtained before the installation can begin. The shipowner
and shipyard doing the installation are responsible for obtaining and paying for such
approval.
KONGSBERG EM 2040 MKII Installation Manual