Worksheet 330 · Skill 4
Two-bearing fix
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At 1645 you take two bearings with a hand-bearing compass: Mill stack bears 166°M and Gannet Rock daybeacon bears 101°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 1000 you take two bearings with a hand-bearing compass: Heron Point Light bears 255°M and Kittle water tank bears 158°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 1035 you take two bearings with a hand-bearing compass: Heron Point Light bears 234°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 1110 you take two bearings with a hand-bearing compass: Heron Point Light bears 239°M and Westfield church spire bears 308°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 1450 you take two bearings with a hand-bearing compass: Heron Point Light bears 206°M and Mill stack bears 151°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 1555 you take two bearings with a hand-bearing compass: Mill stack bears 164°M and Gannet Rock daybeacon bears 108°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 0700 you take two bearings with a hand-bearing compass: Heron Point Light bears 276°M and Mill stack bears 167°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 1435 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 160°M and Mill stack 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 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 Green can "1": 014 °T Distance: 0.99 nm | No. 330001 (worked solution) |
| 2 | Bearing from Gannet Rock daybeacon: 316 °T Distance: 0.91 nm | No. 330002 (worked solution) |
| 3 | Bearing from Red nun "2": 042 °T Distance: 1.91 nm | No. 330003 (worked solution) |
| 4 | Bearing from Red nun "2": 227 °T Distance: 1.05 nm | No. 330004 (worked solution) |
| 5 | Bearing from Green can "1": 308 °T Distance: 1.32 nm | No. 330005 (worked solution) |
| 6 | Bearing from Red nun "2": 323 °T Distance: 1.38 nm | No. 330006 (worked solution) |
| 7 | Bearing from Green can "1": 139 °T Distance: 1.78 nm | No. 330007 (worked solution) |
| 8 | Bearing from Tern Island tower: 139 °T Distance: 1.94 nm | No. 330008 (worked solution) |