Seamanship_Secrets_185_Tips_-_Techniques_for_Better_Navigation-_Cruise_Planning-_and_Boat_Handling_Under_Power_or_Sail_(Re)_e..
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#1
MAXIMUM RADAR TARGET RANGE BASED ON HEIGHT OF RAD
AR
ANTENNA H(ra)
H(ra)
Range
H(ra)
Range
H(ra)
Range
H(ra)
Range
H(ra)
Range
1
1.2
16
4.9
31
6.8
46
8.3
61
9.5
2
1.7
17
5.0
32
6.9
47
8.4
62
9.6
3
2.1
18
5.2
33
7.0
48
8.5
63
9.7
4
2.4
19
5.3
34
7.1
49
8.5
64
9.8
5
2.7
20
5.5
35
7.2
50
8.6
65
9.8
6
3.0
21
5.6
36
7.3
51
8.7
66
9.9
7
3.2
22
5.7
37
7.4
52
8.8
67
10.0
8
3.5
23
5.9
38
7.5
53
8.9
68
10.1
9
3.7
24
6.0
39
7.6
54
9.0
69
10.1
10
3.9
25
6.1
40
7.7
55
9.0
70
10.2
11
4.0
26
6.2
41
7.8
56
9.1
71
10.3
12
4.2
27
6.3
42
7.9
57
9.2
72
10.4
13
4.4
28
6.5
43
8.0
58
9.3
73
10.4
14
4.6
29
6.6
44
8.1
59
9.4
74
10.5
15
4.7
30
6.7
45
8.2
60
9.5
75
10.6
295
