Sailor 500 FleetBroadband, Installation Manual

Page: 36 / 154

Chapter 2: Installing the system
20 Placing the antenna
SAILOR
®
250 FleetBroadband antenna mast length
The below table shows the values for a SAILOR 250 FleetBroadband antenna
mast without stays or wires. Note that these values are only guidelines -
always consider the environment and characteristics of the ship before
deciding on the mast dimensions.
The mast mount kit interfaces to a 1½” tube (OD 48.3 mm - absolute maximum
OD 52 mm). Masts with larger diameters must be tapered and the upper part
of the tube (approximately 50 mm) must have a diameter of 1½”.
OD
(mm)
Wall
Thickness
(mm)
Weight
(kg/m)
Inertia
(X10
6
mm
4
)
Max. free mast length
(steel), m
48.3 3.25 3.61 0.117 < 0.6
48.3 4.05 4.43 0.139
50 3.00 3.48 0.123
60.3 3.65 5.10 0.262 <0.8
60.3 4.50 6.17 0.309
76.1 3.65 6.80 0.547 < 1.0
76.1 4.50 7.90 0.651
88.9 4.05 8.47 0.974 < 1.1
88.9 4.85 10.10 1.140