Worksheet 936 · Skill 4
Two-bearing fix
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At 1205 you take two bearings with a hand-bearing compass: Heron Point Light bears 243°M and Gannet Rock daybeacon bears 114°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 1250 you take two bearings with a hand-bearing compass: Mill stack bears 185°M and Westfield church spire bears 281°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 0920 you take two bearings with a hand-bearing compass: Mill stack bears 176°M and Westfield church spire bears 246°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 1155 you take two bearings with a hand-bearing compass: Mill stack bears 178°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 1225 you take two bearings with a hand-bearing compass: Heron Point Light bears 199°M and Westfield church spire bears 289°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 1330 you take two bearings with a hand-bearing compass: Mill stack bears 168°M and Heron Point Light bears 236°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 1510 you take two bearings with a hand-bearing compass: Mill stack bears 179°M and Westfield church spire bears 256°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 0800 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 133°M and Heron Point Light bears 211°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: 215 °T Distance: 1.96 nm | No. 936001 (worked solution) |
| 2 | Bearing from Red nun "2": 045 °T Distance: 1.46 nm | No. 936002 (worked solution) |
| 3 | Bearing from Green can "3": 332 °T Distance: 3.32 nm | No. 936003 (worked solution) |
| 4 | Bearing from Green can "3": 329 °T Distance: 2.19 nm | No. 936004 (worked solution) |
| 5 | Bearing from Green can "1": 321 °T Distance: 1.89 nm | No. 936005 (worked solution) |
| 6 | Bearing from Green can "1": 040 °T Distance: 0.81 nm | No. 936006 (worked solution) |
| 7 | Bearing from Green can "3": 335 °T Distance: 2.48 nm | No. 936007 (worked solution) |
| 8 | Bearing from Green can "3": 334 °T Distance: 2.86 nm | No. 936008 (worked solution) |