Worksheet 70 · Skill 4
Two-bearing fix
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At 1550 you take two bearings with a hand-bearing compass: Mill stack bears 167°M and Heron Point Light bears 220°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 1715 you take two bearings with a hand-bearing compass: Mill stack bears 178°M and Westfield church spire bears 252°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 1415 you take two bearings with a hand-bearing compass: Heron Point Light bears 266°M and Mill stack bears 192°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 1750 you take two bearings with a hand-bearing compass: Heron Point Light bears 203°M and Gannet Rock daybeacon bears 119°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 1700 you take two bearings with a hand-bearing compass: Mill stack bears 195°M and Gannet Rock daybeacon bears 123°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 1305 you take two bearings with a hand-bearing compass: Westfield church spire bears 229°M and Mill stack bears 153°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 0745 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 108°M and Heron Point Light 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 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 1605 you take two bearings with a hand-bearing compass: Heron Point Light bears 237°M and Mill stack bears 162°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 Red nun "2": 333 °T Distance: 1.06 nm | No. 70001 (worked solution) |
| 2 | Bearing from Green can "3": 334 °T Distance: 2.82 nm | No. 70002 (worked solution) |
| 3 | Bearing from Red nun "2": 132 °T Distance: 1.89 nm | No. 70003 (worked solution) |
| 4 | Bearing from Red nun "2": 335 °T Distance: 2.66 nm | No. 70004 (worked solution) |
| 5 | Bearing from Tern Island tower: 225 °T Distance: 1.54 nm | No. 70005 (worked solution) |
| 6 | Bearing from Red nun "2": 311 °T Distance: 4.13 nm | No. 70006 (worked solution) |
| 7 | Bearing from Red nun "2": 323 °T Distance: 1.37 nm | No. 70007 (worked solution) |
| 8 | Bearing from Green can "3": 234 °T Distance: 2.07 nm | No. 70008 (worked solution) |