Simrad SC90, Installation Manual, Page: 58 / 544

56
419050/B
Choosing the best location for the hull unit
Topics
About the hull unit location, page 56
Defining the fore and aft location of the hull unit, page 57
Defining the athwartships location of the hull unit, page 57
Important considerations related to noise, page 58
About the hull unit location
Selecting the best possible location for the hull unit is of vital importance for the overall
SC90 performance. The hull unit location must be selected by a skilled engineer with
experience in sonar theory and hull unit installation. Simrad will assist if required.
Note
The information here must be considered as general advice. Each SC90 installation must
be handled separately depending on the hull design.
The physical location of the SC90 hull unit depends on the vessel's design and
construction, how the hull is shaped, and how the water runs along the hull.
Observe the following considerations:
1 The sonar room chosen for the hull unit location must be accessible under all
conditions.
2 The access to the sonar room must be large enough to allow installation and removal
of the hull unit without disassembling it.
3 Heating is an effective method for reducing humidity. The heater in the sonar room
must dimensioned to maintain the equipment within its environmental tolerances.
Typical heating power is minimum 1000 W. The heater must be installed close to
the deck.
4 If it is not possible to connect the sonar room to the vessel's bilge pump system, a
separate bilge pump for the compartment must be installed.
5 The sonar room must be connected to the vessel's ventilation system to ensure a
supply of cooling air. If the vessel is likely to operate in tropical conditions, an air
dehumidifier is strongly recommended to reduce the likelihood of corrosion due to
condensation.
Simrad SC90 Installation Manual