Compasses
What is Variation
the difference between True and Magnetic
What is the latitude of the North Pole?
90° North
What is the saying "RRR" to remember what side to leave the AtoNs on?
Red, Right, Returning
What is the lat/ long of point #1?
41° 32.75' N
70° 51.05' W
True, Variation, Magnetic, Deviation, Compass
Which direction do lines of latitude run?
They run east to west, but they measure distance north and south.
If you are leaving New Bedford and heading out to sea do you go to the West or the East of G C "3"?
Stay to the east of G C "3"
What is the course (magnetic and true) from point 1 to point 3?
T= 271°
M= 283°
What causes variation?
The earth's magnetic pole is different from the Earth's true north pole.
Where is 0° Longitude?
It is the prime meridian and it runs through Greenwich England.
Yes!
What is the lat/ long of point 4?
41° 34.57' N
70° 55.20' W
What is the variation on the New Bedford Harbor Chart? Where did you find it?
12° W
What measurement (of lat or long) is equal to 1 nautical mile?
1' of latitude
Do cans have even or odd numbers on them?
Cans are the green ones and they have odd numbers on them.
What is the course from point 4 to point 2?
T= 103°
M= 115°
What is a reciprocal course?
An opposite course, 180° different. The other side of the compass.
What is our approximate lat/ long here at Tabor?
41° 43' N
70° 46' W
(plus or minus 25')
Answers will vary!
What is found at
41° 34.10' N
70°54.85' W
R "6" on Bents ledge