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| ST60 Tridata Instrument Owner’s Manual | |
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| Hull material | Speed transducer | Depth transducer |
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| Glass reinforced | M78712 Through hull plastic | M78713 Through hull plastic or |
| plastic (GRP) |
| M78718 Retractable through hull |
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| Steel | M78712 Through hull plastic | M78713 Through hull plastic or |
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| M78718 Retractable through hull |
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| Aluminium | M78712 Through hull plastic | M78713 Through hull plastic or |
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| M78718 Retractable through hull |
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| Wood | M78716 Through hull bronze | M78714 Through hull bronze or |
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| M78719 Retractable through hull |
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| bronze |
Other transducer types are also available for specific requirements. For further details, contact your local Raymarine dealer.
For accurate speed and depth readings the transducers should be sited within the clear water flow areas indicated by the shaded areas in the following diagram.
Transducer siting
Sailing vessel
Planing power vessel
Displacement power vessel
The transducers should also:
•Be ahead of the propellers (by a minimum of 10% of the water line length).
•Be at least 150 mm (6 in) away from the keel (ideally ahead of the keel if a sailing yacht).
