Worksheet 74 · Skill 4
Two-bearing fix
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At 1315 you take two bearings with a hand-bearing compass: Heron Point Light bears 197°M and Gannet Rock daybeacon bears 117°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 1435 you take two bearings with a hand-bearing compass: Mill stack bears 157°M and Gannet Rock daybeacon bears 072°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 0750 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 103°M and Mill stack bears 180°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 1005 you take two bearings with a hand-bearing compass: Mill stack bears 172°M and Heron Point Light bears 228°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 0810 you take two bearings with a hand-bearing compass: Mill stack bears 162°M and Westfield church spire bears 262°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 0945 you take two bearings with a hand-bearing compass: Heron Point Light bears 222°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 0950 you take two bearings with a hand-bearing compass: Mill stack bears 174°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 1325 you take two bearings with a hand-bearing compass: Heron Point Light bears 201°M and Westfield church spire bears 267°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Westfield church spire: 071 °T Distance: 2.83 nm | No. 74001 (worked solution) |
| 2 | Bearing from Green can "1": 150 °T Distance: 1.75 nm | No. 74002 (worked solution) |
| 3 | Bearing from Red nun "2": 058 °T Distance: 0.82 nm | No. 74003 (worked solution) |
| 4 | Bearing from Green can "3": 264 °T Distance: 1.30 nm | No. 74004 (worked solution) |
| 5 | Bearing from Red nun "2": 325 °T Distance: 2.63 nm | No. 74005 (worked solution) |
| 6 | Bearing from Red nun "2": 349 °T Distance: 1.14 nm | No. 74006 (worked solution) |
| 7 | Bearing from Green can "3": 259 °T Distance: 1.13 nm | No. 74007 (worked solution) |
| 8 | Bearing from Red nun "2": 323 °T Distance: 2.38 nm | No. 74008 (worked solution) |