Raymarine ST40 Speed Owner's Handbook Manual page 20

12
The transducer should:
• Be ahead of the propellers (by a minimum of 10% of the water line
• Be at least 150 mm (6 in) away from the keel (ideally ahead of the
• Be as near as possible to the centre line of the vessel.
• Be clear of other through-hull fittings or projections.
• Have sufficient clearance inside the hull to fit the nut.
• Have 100 mm (4 in) of headroom to allow for withdrawal.
The transducer should be sited within the clear water flow areas
indicated by the shaded areas in the following diagram.
length ).
keel if a sailing yacht).
Transducer siting
ST40 Speed Instrument Owner's Handbook
Sailing vessel
Planing power
vessel
Displacement power
vessel
D4349-1