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Practice Sheet No. 1, Heron Sound (invented, not for navigation) 34 41 22 38 29 18 27 44 12 21 19 N VAR 7°W (invented) Heron Sound Heron Point Tern Island Westfield Kittle Gannet Rock Fl W 4s 52ft 14M TR TANK SPIRE STACK Dbn 1 2 3 HS 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Border scale: nautical miles (1 nm = 10 ticks) PRACTICE SHEET No. 1 · HERON SOUNDInvented for practice · NOT FOR NAVIGATION · Plotroom
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 4 · Two-bearing fixProblem 24008

Two hand-bearing compass bearings at 0940: plot the fix.

At 0940 you take two bearings with a hand-bearing compass: Westfield church spire bears 230°M and Gannet Rock daybeacon bears 128°M.

Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Red nun "2" to the fix, and the distance.

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

Given
Westfield church spire230°M
Gannet Rock daybeacon128°M
Variation7°W
°T
nm
New problem

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