Worksheet 818 · Skill 4
Two-bearing fix
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At 0750 you take two bearings with a hand-bearing compass: Heron Point Light bears 213°M and Westfield church spire bears 321°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 1340 you take two bearings with a hand-bearing compass: Heron Point Light bears 262°M and Mill stack bears 169°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 0920 you take two bearings with a hand-bearing compass: Westfield church spire bears 287°M and Mill stack bears 205°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 1340 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 075°M and Westfield church spire bears 311°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 1705 you take two bearings with a hand-bearing compass: Westfield church spire bears 296°M and Mill stack bears 196°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 1525 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 118°M and Heron Point Light 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 Westfield church spire to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Westfield church spire: ________ °T Distance: ________ nm
At 0940 you take two bearings with a hand-bearing compass: Westfield church spire bears 231°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 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 0855 you take two bearings with a hand-bearing compass: Westfield church spire bears 260°M and Mill stack bears 191°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": 255 °T Distance: 1.32 nm | No. 818001 (worked solution) |
| 2 | Bearing from Green can "1": 123 °T Distance: 1.20 nm | No. 818002 (worked solution) |
| 3 | Bearing from Green can "3": 121 °T Distance: 1.36 nm | No. 818003 (worked solution) |
| 4 | Bearing from Green can "1": 139 °T Distance: 1.55 nm | No. 818004 (worked solution) |
| 5 | Bearing from Green can "3": 166 °T Distance: 1.61 nm | No. 818005 (worked solution) |
| 6 | Bearing from Westfield church spire: 058 °T Distance: 2.44 nm | No. 818006 (worked solution) |
| 7 | Bearing from Red nun "2": 330 °T Distance: 4.23 nm | No. 818007 (worked solution) |
| 8 | Bearing from Tern Island tower: 299 °T Distance: 1.50 nm | No. 818008 (worked solution) |