Installation manual

Simrad SP90

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.