|
Marking Your Chart
There are some conventions to marking up your chart.
The main reason to use these conventions is that
anyone can pick up your chart and know instantly
whether the course is true or magnetic.
Course Heading is always marked above the
line using 3 digits. If there is nothing following
the number then we assume that the course is a true
heading. It is a good idea to mark all your course
numbers with a “T” for true or “M” for magnetic so
there cannot be any misunderstandings.
Distance is marked under the course line
using one decimal place. Place the letter “D” after
the number so it cannot be confused with any other
marking on your chart.
Speed is marked under the line with one
decimal and the letter “S” after it. All nautical
speed is assumed to be in knots. One knot equals
1.15 MPH.
C 082 M
___________________________________
D 7.4 S 10.3
C= Course
M= Magnetic
D= Distance
S= Speed
 |
