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18. Complete the adjustments by aligning the Connection Tube “SB” flat mark as shown
on Fig. 2.5 below.
Ensure that the Transducer is correctly seated at its lowest position.
Verify this by checking the Transducer installation from outside the ship’s hull. For
future records preferraby documented by photos.
Note: IT IS IMPORTANT THAT THE TRANSDUCER IS CORRECTLY
SEATED AND PROPERLY ALIGNED.
19. Ensure that the Tube Bracket clamping screws are loosened and freely turn the tube so
that the flat area on the Connecting Tube faces strictly to StarBoard and aligned
parallel with the keel line within ±1°.
x Use a straight guide bar held against the flat area to facilitate this, see Fig 2.5.
x By thorough eye aiming, or measure with a ruler/meter tape, align parallel with
any keel/longitudinal line reference (bulkhead, stiffener plate, girder,
longitudinal weld seam or similar).
x Tighten the Tube Bracket screws M12 to approx. 57Nm or if M10 to 35Nm.
x Ensure that the two top nuts (M16M), fixating the tube brackets, are not
pressing down the Transducer with force. The Transducer shall be seated on
the Guide ring and shall not be pressed against it.
x Re-check the tube height reference, Fig. 2.2 above, (assuring Transducer still
properly seated) and then check and retighten Tube Bracket clamping screws
(57Nm if M12, 35Nm if M10) at this position as well as the nuts (150Nm) on
top of the Tube Bracket.
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