Worksheet 991 · Skill 4
Two-bearing fix
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At 1320 you take two bearings with a hand-bearing compass: Mill stack bears 179°M and Heron Point Light bears 232°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).
Bearing from Red nun "2": ________ °T Distance: ________ nm
At 0700 you take two bearings with a hand-bearing compass: Westfield church spire bears 285°M and Mill stack bears 191°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).
Bearing from Red nun "2": ________ °T Distance: ________ nm
At 0755 you take two bearings with a hand-bearing compass: Mill stack bears 205°M and Heron Point Light bears 269°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 Green can "3" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "3": ________ °T Distance: ________ nm
At 1025 you take two bearings with a hand-bearing compass: Westfield church spire bears 335°M and Gannet Rock daybeacon bears 089°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 Heron Point Light to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Heron Point Light: ________ °T Distance: ________ nm
At 0740 you take two bearings with a hand-bearing compass: Mill stack bears 182°M and Heron Point Light bears 235°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).
Bearing from Red nun "2": ________ °T Distance: ________ nm
At 1750 you take two bearings with a hand-bearing compass: Mill stack bears 210°M and Gannet Rock daybeacon bears 087°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 Green can "3" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "3": ________ °T Distance: ________ nm
At 1315 you take two bearings with a hand-bearing compass: Mill stack bears 162°M and Gannet Rock daybeacon bears 075°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 Green can "1" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "1": ________ °T Distance: ________ nm
At 1700 you take two bearings with a hand-bearing compass: Heron Point Light bears 252°M and Gannet Rock daybeacon bears 147°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 Tern Island tower to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Tern Island tower: ________ °T Distance: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Red nun "2": 030 °T Distance: 1.09 nm | No. 991001 (worked solution) |
| 2 | Bearing from Red nun "2": 069 °T Distance: 1.61 nm | No. 991002 (worked solution) |
| 3 | Bearing from Green can "3": 164 °T Distance: 2.38 nm | No. 991003 (worked solution) |
| 4 | Bearing from Heron Point Light: 339 °T Distance: 1.00 nm | No. 991004 (worked solution) |
| 5 | Bearing from Red nun "2": 042 °T Distance: 1.19 nm | No. 991005 (worked solution) |
| 6 | Bearing from Green can "3": 135 °T Distance: 1.83 nm | No. 991006 (worked solution) |
| 7 | Bearing from Green can "1": 143 °T Distance: 1.52 nm | No. 991007 (worked solution) |
| 8 | Bearing from Tern Island tower: 147 °T Distance: 1.81 nm | No. 991008 (worked solution) |