JRC JLR-20 Instruction Manual page 26

● Installation Procedure for Optional Mount Base for NNN-20
1. Install the mounting base to the pole by using fixing brackets, M8 bolts, flat washers, spring
washers, and nuts. Then, secure the sensor to the mounting base. Beware of the bow
direction.
Mounting base
Nut (M8)
2-8
GPS3
Flat washer
Spring washer
Pole (dockyard supply)
Φ60.5 –Φ89.1 mm steel pipe is recommended
GPS2
BOW
GPS1
Fix horizontally
to the keel line
Nut
Spring washer
Flat washer
Flat washer
Flat washer
Fixing bracket
Spring washer
Hex bolt
Hex bolt (M8)