Worksheet 318 · Skill 4
Two-bearing fix
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At 1550 you take two bearings with a hand-bearing compass: Heron Point Light bears 202°M and Gannet Rock daybeacon bears 100°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 0710 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 104°M and Mill stack bears 189°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 1130 you take two bearings with a hand-bearing compass: Mill stack bears 193°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 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 0720 you take two bearings with a hand-bearing compass: Mill stack bears 195°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 0800 you take two bearings with a hand-bearing compass: Heron Point Light bears 209°M and Gannet Rock daybeacon bears 095°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 1525 you take two bearings with a hand-bearing compass: Westfield church spire bears 255°M and Gannet Rock daybeacon bears 125°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 0945 you take two bearings with a hand-bearing compass: Westfield church spire bears 292°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 "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 1710 you take two bearings with a hand-bearing compass: Westfield church spire bears 256°M and Mill stack bears 188°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 Green can "1": 309 °T Distance: 1.51 nm | No. 318001 (worked solution) |
| 2 | Bearing from Red nun "2": 072 °T Distance: 1.41 nm | No. 318002 (worked solution) |
| 3 | Bearing from Tern Island tower: 319 °T Distance: 1.57 nm | No. 318003 (worked solution) |
| 4 | Bearing from Red nun "2": 070 °T Distance: 1.92 nm | No. 318004 (worked solution) |
| 5 | Bearing from Green can "1": 289 °T Distance: 1.15 nm | No. 318005 (worked solution) |
| 6 | Bearing from Green can "3": 316 °T Distance: 2.77 nm | No. 318006 (worked solution) |
| 7 | Bearing from Green can "1": 007 °T Distance: 0.98 nm | No. 318007 (worked solution) |
| 8 | Bearing from Tern Island tower: 302 °T Distance: 1.98 nm | No. 318008 (worked solution) |