Worksheet 721 · Skill 4
Two-bearing fix
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At 1110 you take two bearings with a hand-bearing compass: Mill stack bears 196°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 1225 you take two bearings with a hand-bearing compass: Mill stack bears 169°M and Gannet Rock daybeacon bears 096°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 1550 you take two bearings with a hand-bearing compass: Westfield church spire bears 283°M and Mill stack bears 173°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 1025 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 116°M and Heron Point Light bears 200°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 1555 you take two bearings with a hand-bearing compass: Westfield church spire bears 322°M and Gannet Rock daybeacon bears 077°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 1505 you take two bearings with a hand-bearing compass: Heron Point Light bears 194°M and Westfield church spire bears 248°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: Heron Point Light bears 196°M and Westfield church spire bears 310°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 0855 you take two bearings with a hand-bearing compass: Mill stack bears 165°M and Westfield church spire bears 286°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 148 °T Distance: 0.94 nm | No. 721001 (worked solution) |
| 2 | Bearing from Green can "1": 050 °T Distance: 0.81 nm | No. 721002 (worked solution) |
| 3 | Bearing from Red nun "2": 003 °T Distance: 0.94 nm | No. 721003 (worked solution) |
| 4 | Bearing from Red nun "2": 326 °T Distance: 2.59 nm | No. 721004 (worked solution) |
| 5 | Bearing from Green can "1": 190 °T Distance: 1.48 nm | No. 721005 (worked solution) |
| 6 | Bearing from Red nun "2": 327 °T Distance: 3.32 nm | No. 721006 (worked solution) |
| 7 | Bearing from Green can "1": 291 °T Distance: 1.59 nm | No. 721007 (worked solution) |
| 8 | Bearing from Red nun "2": 323 °T Distance: 1.03 nm | No. 721008 (worked solution) |