Dividers: drag from one point to another on the chart

Start a drag on a charted object or buoy and it snaps to it. The readout gives the true bearing (and magnetic, 7°W) from where you start to where you are, and the distance in nautical miles.

Skill 3 · Dead reckoningProblem 406005

Two legs from a 1135 fix: where is the 1235 DR?

At 1135 you fix your position 012°T, 1.9 nm from Mill stack. You steer 287°T at 8.4 kn until 1150, then 057°T at 6.4 kn until 1235.

Give the 1235 DR position as the true bearing FROM Tern Island tower to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

Tolerance: 2° and 0.15 nm (or 4 % of the distance).

Given
1135 fix	012°T, 1.9 nm from Mill stack
Leg 1	287°T, 8.4 kn, 1135 to 1150
Leg 2	057°T, 6.4 kn, 1150 to 1235

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