Worksheet 644 · Skill 4
Two-bearing fix
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At 1715 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 099°M and Heron Point Light bears 204°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 1755 you take two bearings with a hand-bearing compass: Westfield church spire bears 294°M and Mill stack bears 194°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 1330 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 083°M and Mill stack bears 164°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 1710 you take two bearings with a hand-bearing compass: Heron Point Light bears 193°M and Westfield church spire bears 253°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 1735 you take two bearings with a hand-bearing compass: Westfield church spire bears 249°M and Mill stack bears 176°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 1610 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 124°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 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 1345 you take two bearings with a hand-bearing compass: Westfield church spire bears 307°M and Heron Point Light bears 218°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 1010 you take two bearings with a hand-bearing compass: Heron Point Light bears 210°M and Gannet Rock daybeacon bears 124°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 Green can "1": 306 °T Distance: 1.39 nm | No. 644001 (worked solution) |
| 2 | Bearing from Green can "3": 167 °T Distance: 1.34 nm | No. 644002 (worked solution) |
| 3 | Bearing from Green can "1": 128 °T Distance: 0.92 nm | No. 644003 (worked solution) |
| 4 | Bearing from Red nun "2": 322 °T Distance: 3.12 nm | No. 644004 (worked solution) |
| 5 | Bearing from Green can "3": 330 °T Distance: 3.07 nm | No. 644005 (worked solution) |
| 6 | Bearing from Westfield church spire: 046 °T Distance: 3.05 nm | No. 644006 (worked solution) |
| 7 | Bearing from Green can "1": 292 °T Distance: 0.83 nm | No. 644007 (worked solution) |
| 8 | Bearing from Green can "3": 316 °T Distance: 2.46 nm | No. 644008 (worked solution) |