Furuno VR-7000 Installation Manual page 13

1.2.2 Float-free data recording unit VR-7021F
Mounting consideration
Select a mounting location, keeping in mind in the following points:
• The float-free DRU should, with greatest possible probability, float-free and avoid
being caught in railings, superstructure, etc., if the ship sinks.
• The float-free DRU should be located so that it may be easily released manually and
brought to the survival craft by one person. It should therefore not be located in a
radar mast or any other places which can only be reached by vertical ladder.
• Fix the float-free DRU vertically on the bulkhead or handrail so that the cable en-
trance faces downward.
• The float-free DRU should be equipped with a buoyant lanyard suitable for use as
a tether to life craft, etc. The buoyant lanyard should be so arranged as to prevent
its being trapped in the ship's structure.
• The float-free DRU should be marked with the ship's call sign, serial number, MMSI
number (if applicable), 15 Hex ID, and battery expiry date before installation.
• Select a mounting location considering the cable length of this unit.
The cable between the float-free DRU and junction box (VR-7022F) should be 1.8
m or less.
Note: The float-free DRU may also be used to fulfil the requirements for one piece of
equipment (of two), which is capable of transmitting distress alert to shore from or near
the navigating bridge of the ship. Under such conditions the float-free DRU should fulfil
the following additional requirements with regards to location/installation:
• The float-free DRU must be installed in the vicinity of the navigation bridge, i.e. on
the wings of the navigation bridge. Access via vertical ladder should not be accept-
ed. A location on the top of the wheelhouse may be accepted to fulfil the require-
ment if accessible by stairs.
1. MOUNTING
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