Worksheet 632 · Skill 4
Two-bearing fix
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At 1345 you take two bearings with a hand-bearing compass: Westfield church spire bears 317°M and Heron Point Light bears 193°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 1100 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 132°M and Westfield church spire bears 228°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 1250 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Westfield church spire bears 257°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 1345 you take two bearings with a hand-bearing compass: Heron Point Light bears 277°M and Mill stack bears 207°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 1640 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 118°M and Heron Point Light bears 226°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 1705 you take two bearings with a hand-bearing compass: Mill stack bears 187°M and Westfield church spire bears 253°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
At 1145 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 132°M and Westfield church spire bears 249°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 1215 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 102°M and Heron Point Light bears 220°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "1": 279 °T Distance: 1.65 nm | No. 632001 (worked solution) |
| 2 | Bearing from Green can "3": 321 °T Distance: 4.62 nm | No. 632002 (worked solution) |
| 3 | Bearing from Green can "3": 340 °T Distance: 2.39 nm | No. 632003 (worked solution) |
| 4 | Bearing from Red nun "2": 138 °T Distance: 2.70 nm | No. 632004 (worked solution) |
| 5 | Bearing from Green can "3": 314 °T Distance: 1.05 nm | No. 632005 (worked solution) |
| 6 | Bearing from Tern Island tower: 307 °T Distance: 2.25 nm | No. 632006 (worked solution) |
| 7 | Bearing from Green can "3": 329 °T Distance: 3.07 nm | No. 632007 (worked solution) |
| 8 | Bearing from Red nun "2": 302 °T Distance: 0.92 nm | No. 632008 (worked solution) |