KGC-1
Chapter
4
Operation Manual
Installation
4.5
Instructions for installation
4.5.1
GPS Antenna installation
The GPS Antenna should be installed, as shown in Fig. 4.2, on the keel line with the BOW mark
oriented to the ship’s bow. If this is not possible due to the ship’s superstructure, the antenna may be
moved in parallel to the keel line. However, the antenna should be, where possible, installed on the
midship, to minimize bearing deviation between the ship’s bearing and course. For correct drilling of
the fixing holes, use the attached template.
Installation procedure
(1) Drill 4 fixing holes on the platform using the template attached.
(2) Connect the coax cable and apply waterproofing. (Refer to 4.5.1.3. for detail)
Secure the waterproofed coax cable to the platform post with a weather-resistive binding tie. Never
apply excessive force (pulling, twisting, etc.) to the cable; otherwise the cable may be damaged.
(3) Put the GPS Antenna (GA-11) on the platform and fix, referring to Fig. 4.3.
(Binding ties and fixing bolts are not supplied. Fixing bolts should be locally purchased that best fit the
requirements shown in the reference table below.
Platform thickness (t)
Bolt length
5mm ~ 12mm
M8
×
30U
13mm ~ 17mm
M8
×
35U
Suitable bolts for the platform thickness
are as follows:
Ship’s bow
Fig. 4.2 Orientation of the GPS Antenna
Ship’s stern
Fig. 4.3
Fixing the GPS Antenna
93121652-00
4-3
