3. Installation
3.1 Location
The winch should be mounted at a location which allows the boom to be extended over the stern, far
enough from the vessel outline that the profiler is unlikely to contact the hull.
Apart from its location the height of the mounting platform should be such that when the profiler has
been fully recovered it will be suspended clear, or partially clear, of the water and in a position where it
can reliably transmit data.
If a raised platform is needed this can be a simple wooden structure. The boom should be parallel to
the boat's centreline so that it will experience minimum sideways force when the profiler is deployed
and the boat is underway.
The winch is supplied with eight points at which attachment screws can be fitted. However it can be
secured with as few as six screws if necessary, leaving two of the holes empty.
3.2 Extending and Retracting the Boom
The winch is supplied originally with the boom in the retracted position; a configuration that it will
usually be returned to when not in use.
To extend the boom, release the red latch. This latch pivots on one of the top hinges of the boom, and
when closed, extends outwards to grip one of the other hinges. With the latch lifted pull the end of the
boom outwards until it locks in position. The mechanism that locks the boom reports the fact to the
winch computer which, if powered, switches on the two white LED’s that illuminate the boom area.
This extended position is necessary (in a normal installation) before the computer will allow casts to
be performed, and is confirmed to the operator via the control software.
To retract the boom from the fully extended position, lift the red knob on the levelwind unit. Whilst this
knob is held raised the boom lock is released and the boom can be retracted. Ensure that the rotating
red latch is above the path of the retracting boom then push the boom back fully towards the winch.
When the boom is fully retracted rotate the latch down to secure it.
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