Worksheet 547 · Skill 4
Two-bearing fix
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At 1305 you take two bearings with a hand-bearing compass: Westfield church spire bears 277°M and Mill stack bears 212°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 0805 you take two bearings with a hand-bearing compass: Westfield church spire bears 268°M and Mill stack bears 172°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: Westfield church spire bears 299°M and Gannet Rock daybeacon bears 069°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 1015 you take two bearings with a hand-bearing compass: Mill stack bears 196°M and Westfield church spire bears 284°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 0950 you take two bearings with a hand-bearing compass: Heron Point Light bears 201°M and Gannet Rock daybeacon bears 123°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 0730 you take two bearings with a hand-bearing compass: Westfield church spire bears 256°M and Mill stack bears 183°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 1125 you take two bearings with a hand-bearing compass: Heron Point Light bears 213°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 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 1620 you take two bearings with a hand-bearing compass: Mill stack bears 213°M and Heron Point Light bears 264°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 152 °T Distance: 1.24 nm | No. 547001 (worked solution) |
| 2 | Bearing from Green can "3": 305 °T Distance: 1.99 nm | No. 547002 (worked solution) |
| 3 | Bearing from Green can "3": 154 °T Distance: 2.44 nm | No. 547003 (worked solution) |
| 4 | Bearing from Red nun "2": 071 °T Distance: 1.99 nm | No. 547004 (worked solution) |
| 5 | Bearing from Red nun "2": 338 °T Distance: 3.14 nm | No. 547005 (worked solution) |
| 6 | Bearing from Tern Island tower: 290 °T Distance: 2.43 nm | No. 547006 (worked solution) |
| 7 | Bearing from Green can "3": 327 °T Distance: 2.39 nm | No. 547007 (worked solution) |
| 8 | Bearing from Green can "3": 144 °T Distance: 2.17 nm | No. 547008 (worked solution) |