Worksheet 993 · Skill 4
Two-bearing fix
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At 0745 you take two bearings with a hand-bearing compass: Mill stack bears 151°M and Heron Point Light bears 232°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 0810 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 109°M and Heron Point Light bears 208°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 1710 you take two bearings with a hand-bearing compass: Mill stack bears 204°M and Westfield church spire bears 298°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 1600 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 127°M and Heron Point Light bears 231°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 1220 you take two bearings with a hand-bearing compass: Mill stack bears 156°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 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 0750 you take two bearings with a hand-bearing compass: Heron Point Light bears 272°M and Mill stack bears 222°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 Gannet Rock daybeacon to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Gannet Rock daybeacon: ________ °T Distance: ________ nm
At 1250 you take two bearings with a hand-bearing compass: Heron Point Light bears 213°M and Gannet Rock daybeacon bears 116°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 1615 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 129°M and Mill stack bears 207°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 Red nun "2": 239 °T Distance: 1.21 nm | No. 993001 (worked solution) |
| 2 | Bearing from Red nun "2": 318 °T Distance: 1.71 nm | No. 993002 (worked solution) |
| 3 | Bearing from Green can "3": 160 °T Distance: 2.05 nm | No. 993003 (worked solution) |
| 4 | Bearing from Green can "3": 006 °T Distance: 1.06 nm | No. 993004 (worked solution) |
| 5 | Bearing from Red nun "2": 238 °T Distance: 0.88 nm | No. 993005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 233 °T Distance: 2.61 nm | No. 993006 (worked solution) |
| 7 | Bearing from Red nun "2": 344 °T Distance: 1.91 nm | No. 993007 (worked solution) |
| 8 | Bearing from Tern Island tower: 182 °T Distance: 1.35 nm | No. 993008 (worked solution) |