Worksheet 646 · Skill 4
Two-bearing fix
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At 1300 you take two bearings with a hand-bearing compass: Westfield church spire bears 293°M and Mill stack bears 174°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 0745 you take two bearings with a hand-bearing compass: Mill stack bears 206°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 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 1745 you take two bearings with a hand-bearing compass: Heron Point Light bears 275°M and Gannet Rock daybeacon bears 044°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 Mill stack to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Mill stack: ________ °T Distance: ________ nm
At 1320 you take two bearings with a hand-bearing compass: Heron Point Light bears 259°M and Mill stack bears 183°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 1130 you take two bearings with a hand-bearing compass: Heron Point Light bears 236°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 1405 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 115°M and Mill stack bears 185°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: Westfield church spire bears 258°M and Heron Point Light bears 207°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 1515 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 309°M and Kittle water tank bears 241°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 Bell buoy "HS" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Bell buoy "HS": ________ °T Distance: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "1": 054 °T Distance: 1.15 nm | No. 646001 (worked solution) |
| 2 | Bearing from Green can "3": 087 °T Distance: 1.51 nm | No. 646002 (worked solution) |
| 3 | Bearing from Mill stack: 050 °T Distance: 2.95 nm | No. 646003 (worked solution) |
| 4 | Bearing from Red nun "2": 132 °T Distance: 1.34 nm | No. 646004 (worked solution) |
| 5 | Bearing from Red nun "2": 046 °T Distance: 1.11 nm | No. 646005 (worked solution) |
| 6 | Bearing from Red nun "2": 040 °T Distance: 1.60 nm | No. 646006 (worked solution) |
| 7 | Bearing from Green can "3": 311 °T Distance: 2.66 nm | No. 646007 (worked solution) |
| 8 | Bearing from Bell buoy "HS": 172 °T Distance: 5.71 nm | No. 646008 (worked solution) |