Worksheet 481 · Skill 4
Two-bearing fix
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At 0840 you take two bearings with a hand-bearing compass: Westfield church spire bears 227°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 0950 you take two bearings with a hand-bearing compass: Westfield church spire bears 298°M and Heron Point Light bears 201°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 0920 you take two bearings with a hand-bearing compass: Mill stack bears 148°M and Gannet Rock daybeacon bears 075°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 1655 you take two bearings with a hand-bearing compass: Mill stack bears 202°M and Westfield church spire bears 289°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 1740 you take two bearings with a hand-bearing compass: Westfield church spire bears 297°M and Heron Point Light 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 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 1305 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 063°M and Westfield church spire bears 307°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 1625 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 123°M and Westfield church spire bears 239°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: Gannet Rock daybeacon bears 133°M and Heron Point Light bears 211°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": 319 °T Distance: 4.17 nm | No. 481001 (worked solution) |
| 2 | Bearing from Green can "1": 311 °T Distance: 1.58 nm | No. 481002 (worked solution) |
| 3 | Bearing from Green can "1": 163 °T Distance: 1.47 nm | No. 481003 (worked solution) |
| 4 | Bearing from Green can "3": 134 °T Distance: 1.26 nm | No. 481004 (worked solution) |
| 5 | Bearing from Green can "3": 228 °T Distance: 1.64 nm | No. 481005 (worked solution) |
| 6 | Bearing from Mill stack: 018 °T Distance: 1.71 nm | No. 481006 (worked solution) |
| 7 | Bearing from Red nun "2": 330 °T Distance: 3.79 nm | No. 481007 (worked solution) |
| 8 | Bearing from Green can "3": 334 °T Distance: 2.86 nm | No. 481008 (worked solution) |