APPLY NAUTICAL MEASURMENTS Flashcards
1
Q
Why is the earth’s polar radius shorter than its equatorial radius?
A
The earth is an oblate spheroid due to it spinning on its axis
2
Q
Is the equator a great circle?
A
Yes. The equator is a great circle, perpendicular to the earth’s axis
3
Q
What is the prime meridian?
A
the meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°.
4
Q
Name the 5 major parallels of latitude.
A
- Arctic Circle,
- Tropic of Cancer,
- Equator,
- Tropic of Capricorn, and
- Antarctic Circle.
5
Q
How long is a nautical mile?
A
1852 metres. It is a mean value of 1 minute of arc at the varying latitudes.
6
Q
How many yards are in 6 cables?
A
1200 yards
7
Q
30 CABLES IS HOW MANY MILES?
A
3 NM
8
Q
A HALF MILE IS HOW MANY CABLES?
A
5 c
9
Q
6 FATHOMS IS HOW MANY METERS?
A
12 m
10
Q
HOW MANY METERS IS 2 SHACKLES?
A
60 m
