Worksheet 410 · Skill 4
Two-bearing fix
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At 1605 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 064°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 1155 you take two bearings with a hand-bearing compass: Mill stack bears 183°M and Gannet Rock daybeacon bears 097°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 1240 you take two bearings with a hand-bearing compass: Westfield church spire bears 256°M and Heron Point Light bears 190°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 1325 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 082°M and Mill stack bears 148°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 1620 you take two bearings with a hand-bearing compass: Westfield church spire bears 301°M and Gannet Rock daybeacon bears 071°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 1405 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 094°M and Mill stack bears 214°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 0905 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 118°M and Mill stack bears 195°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 1800 you take two bearings with a hand-bearing compass: Heron Point Light bears 208°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 146 °T Distance: 2.66 nm | No. 410001 (worked solution) |
| 2 | Bearing from Red nun "2": 090 °T Distance: 0.94 nm | No. 410002 (worked solution) |
| 3 | Bearing from Red nun "2": 315 °T Distance: 3.11 nm | No. 410003 (worked solution) |
| 4 | Bearing from Green can "1": 181 °T Distance: 0.85 nm | No. 410004 (worked solution) |
| 5 | Bearing from Green can "3": 164 °T Distance: 2.38 nm | No. 410005 (worked solution) |
| 6 | Bearing from Green can "3": 120 °T Distance: 2.00 nm | No. 410006 (worked solution) |
| 7 | Bearing from Tern Island tower: 219 °T Distance: 1.78 nm | No. 410007 (worked solution) |
| 8 | Bearing from Green can "1": 316 °T Distance: 1.30 nm | No. 410008 (worked solution) |