Simrad SP90 - REV E, Installation Manual

Page: 40 / 232

Simrad SP90
28
851-164510 / Rev.E
On the main deck, the best ventilation is provided when the
outlet pipe is at least four meters higher than the inlet pipe. To
keep out sea water, rain and spray, the ventilation pipes should
be fitted with goosenecks of the equivalent.
Conduit
If the cable between the wheelhouse and the sonar room passes
through hatches or areas where it may be damaged, it should be
run through a conduit (two inch conduit is recommended).
Air vent pipe
An air vent conduit with a minimum of 10 mm internal diameter
must be attached to the air bleeding cock on the Hull Unit. The
pipe should be laid with with continuous rise to free air on deck
or through the ship’s side.
Note:
Through-hull modifications are subject to approval by the
vessel’s national registry and corresponding maritime authority.
The shipowner and shipyard are responsible for obtaining
installation approval.
Bilge pump
The sonar room should be connected to the vessel’s bilge pump
system. If this is not possible, a separate bilge pump for the
sonar room must be installed.
Lighting
The sonar room should be equipped with suitable lighting to
simplify the installation and aid future maintenance.
Dry docking
Make sure that ample space is provided between the vessel and
dry dock for system installation. To facilitate future dry docking,
mark the position of the installed trunk as indicated.
Decking
Once the installation has been completed, the sonar room should
be suitably decked without restricting access to the equipment.
References
→
Refer to page 29 for an example of a sonar room arrangement.
Related topics
→
Environmental tolerances, page 167