Installation manual

Sonar trunk
31
851-164510 / Rev.E
3SONARTRUNK
3.1 Introduction
The sonar trunk provides the physical foundation for the entire
hull unit gantry. The trunk further penetrates the hull, and it is
therefore a cruicial part of the hull unit assembly. In order to
ensure proper sonar operation, the location of the sonar trunk
must be carefully selected.
A DnV approved trunk with a blind cover can be ordered from
Simrad as an optional delivery, or it may be manufactured by
the installation shipyard based on the drawings in this manual
and the properties of the hull.
The installation shipyard must provide all necessary installation
drawings, and if required, these must be approved by the
applicable authorities.
Topics
→ Mounting the trunk, page 32
→ Protection, page 33
→ Trunk installation principles (drawings), page 34
→ Measurements, page 37