Raytheon Standard 22 Compact Operator's Manual page 31

Example of heading
calculation
Compass heading
Latitude
Speed
Correction value from table
True heading
Edition: February 2015
Operator Manual
Compass Standard 22
and
Standard 22 Compact
345 -- 1.7 = 343,3
Example of a bearing:
Compass heading
Latitude:
Speed:
Direction of bearing:
Correction value as per table:
True bearing:
The following statement applies:
The TRUE HEADING is always to the west of the compass
heading.
Compass heading
true heading
1
345
55
16 Kts
-- 1.7
255
55
16 Kts
135
+0.5
135 + 0.5 = 135.5
--
W
+
25
Compass
Standard 22
2
223.7
55
16 Kts
+ 1.3
223.7 + 1.3 = 225
N
--
E
+
S
4102.DOC010102