Location requirements

Location requirementsFor best performance, transducers should be installed in a location with the least turbulence and aeration.

• Transducers should be installed as close to the center line of the vessel as possible.

  

  1. Outboard or I/O (Planing hull) — mount forward and to the side of the propeller(s).

  2. Inboard (Planing hull) — mount forward of the propeller(s) and shaft(s).

  3. Stepped hull (Planing hull) — mount on the first step as far aft as possible.

  4. Displacement hull — mount approximately 1/3 of the way along the length of the hull, measured along the waterline.

  5. Fin keel (Keel sailboat) — mount forward of the keel, ensuring that the keel will not obstruct the transducers wide beam width.

  6. Full keel (Keel sailboat) — mount away from the keel at a location with minimum dead rise, ensuring that the keel will not obstruct the transducers wide beam width.

• The mounting surface should be flat so that transducer sits flush against the hull.

• Transducer locationWhen installing split-pair transducers with angled elements, you must ensure that the hull’s deadrise angle at the chosen mounting location is appropriate for the selected transducers.

• When fitting to a hull with a keel, ensure that the transducer beam will not be obstructed by the keel. If the transducer cannot be fitted fore or aft of the keel then use split pair transducers to overcome the obstruction.

  

• The transducers should be installed away from any protrusions such as other transducers, steps, ribs, strakes, or rows of rivets.

• Transducers should be installed in a location where no load will be applied to the transducers during, launching, lifting, trailering and storage of the boat.

• Transducers must be installed in the correct orientation, with the anti-rotation bolt closest to the stern of the vessel. Additionally, a direction arrow pointing to the bow is embossed on the anti-rotation bolt cap.

• When installing split-pair transducers:

  • the correct transducer (port or starboard) must be installed in the matching (port or starboard) side of the hull. The transducers have labels on the top face that identify which side they should be installed on and the transducer’s element angle:

    

    1. Direction to vessel bow

    2. Element angle and vessel side:

       • Single (all-in-one) transducers are marked “0°”

       • Split pair (“12°” or “20°”)

       • Split pair — port, “P” or starboard, “S”)

    3. Split pair — Vessel side and direction to vessel keel (Single all-in-one transducers do not include this label.)

  • Transducer orientation each transducer in a split pair have labels on the transducer cables and also labels on the accompanying ‘Y’ cable which identify the side:

    

    1. Green — Starboard-side Y cable.

    2. Green — Starboard side transducer cable.

    3. Red — Port side Y cable.

    4. Red — Port side transducer cable.

  • choose mounting positions that are symmetric about the center line of the vessel.

  • choose mounting positions that are at least 300 mm (12 inches) below the water line.

• Transducers should be installed in a location where there is sufficient clearance inside the hull to fit the nut and have at least 100  mm (4 in) of headroom to allow for withdrawal.

• To avoid interference with the internal magnetometer, mount transducers at least 1 m (39 inches) from other electrical devices.