Worksheet 581 · Skill 4
Two-bearing fix
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At 1450 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 102°M and Mill stack bears 166°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 1655 you take two bearings with a hand-bearing compass: Mill stack bears 206°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
At 0710 you take two bearings with a hand-bearing compass: Mill stack bears 167°M and Heron Point Light bears 234°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 0705 you take two bearings with a hand-bearing compass: Westfield church spire bears 253°M and Mill stack bears 187°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 1600 you take two bearings with a hand-bearing compass: Heron Point Light bears 196°M and Westfield church spire bears 287°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 0715 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 123°M and Mill stack bears 181°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 1410 you take two bearings with a hand-bearing compass: Heron Point Light bears 251°M and Westfield church spire bears 309°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 1320 you take two bearings with a hand-bearing compass: Westfield church spire bears 260°M and Gannet Rock daybeacon bears 131°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 Green can "1": 011 °T Distance: 1.07 nm | No. 581001 (worked solution) |
| 2 | Bearing from Green can "3": 155 °T Distance: 2.03 nm | No. 581002 (worked solution) |
| 3 | Bearing from Green can "3": 241 °T Distance: 1.69 nm | No. 581003 (worked solution) |
| 4 | Bearing from Tern Island tower: 307 °T Distance: 2.25 nm | No. 581004 (worked solution) |
| 5 | Bearing from Green can "1": 320 °T Distance: 2.07 nm | No. 581005 (worked solution) |
| 6 | Bearing from Green can "3": 329 °T Distance: 1.35 nm | No. 581006 (worked solution) |
| 7 | Bearing from Red nun "2": 202 °T Distance: 1.11 nm | No. 581007 (worked solution) |
| 8 | Bearing from Green can "3": 339 °T Distance: 2.12 nm | No. 581008 (worked solution) |