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 150002

Two legs from a 1245 fix: where is the 1325 DR?

At 1245 you fix your position 030°T, 1.8 nm from Mill stack. You steer 300°T at 6.7 kn until 1315, then 177°T at 9.6 kn until 1325.

Give the 1325 DR position as the true bearing FROM Heron Point Light 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
1245 fix	030°T, 1.8 nm from Mill stack
Leg 1	300°T, 6.7 kn, 1245 to 1315
Leg 2	177°T, 9.6 kn, 1315 to 1325

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