Diver6 User Manual
Section 4: Page 31 of 87
Boat
Using the Diver6 System off a boat is more difficult than a stationary
structure such as a pier/wharf/marina etc. as the Topside Modem tends
to swing around when dangled off the boat. When using the Diver6
System from a boat, the Topside Modem Mount should be utilized
(Figure 18). It is relevant to note that the more stable the Topside
Modem, the more accurate the tracking component will be.
There is a heading mark on the base and top of the Topside Modem that
needs to be placed at zero degrees relative to the bow of the boat. With
this arrangement, limited maneuvering of the boat can be performed
without the need to lift the transducer. The coxswain’s view in the
software is referenced to this index mark (Figure 19).
Careful consideration is needed for the Topside Modem placement. It
needs to be:
1.
Clear of the boat propellers. For this reason, it is not a good idea to
mount the Topside Modem over the stern of the boat. If the
Topside Modem is deployed over the stern of the boat, it must be
lifted before the boat goes into gear.
2.
Clear of the keel of the boat by about 150-300 mm (6-12 inches) and
away from propeller entanglement.
An alternative to the mid-ship’s deployment is off the bow of the boat
using the anchor fairlead. This option is less desirable as any forward
movement of the boat will result in the Topside Modem hitting the hull
of the boat. A fixed mount is highly recommended to prevent the
Topside Modem from spinning in the water and causing in accuracies
(Figure 20).
Figure 18: Topside with fixed mount
Figure 19: Topside Heading Tick
Mark
