Worksheet 922 · Skill 4
Two-bearing fix
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At 0710 you take two bearings with a hand-bearing compass: Westfield church spire bears 277°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 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 1020 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 103°M and Heron Point Light bears 187°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 0715 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 110°M and Heron Point Light bears 223°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 0955 you take two bearings with a hand-bearing compass: Heron Point Light bears 249°M and Gannet Rock daybeacon bears 160°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
At 1130 you take two bearings with a hand-bearing compass: Westfield church spire bears 291°M and Mill stack bears 202°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 0755 you take two bearings with a hand-bearing compass: Mill stack bears 190°M and Westfield church spire bears 293°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: Heron Point Light bears 187°M and Gannet Rock daybeacon bears 117°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 1245 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 067°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 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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Red nun "2": 335 °T Distance: 1.55 nm | No. 922001 (worked solution) |
| 2 | Bearing from Westfield church spire: 109 °T Distance: 2.01 nm | No. 922002 (worked solution) |
| 3 | Bearing from Red nun "2": 354 °T Distance: 1.14 nm | No. 922003 (worked solution) |
| 4 | Bearing from Tern Island tower: 135 °T Distance: 1.51 nm | No. 922004 (worked solution) |
| 5 | Bearing from Green can "3": 143 °T Distance: 1.39 nm | No. 922005 (worked solution) |
| 6 | Bearing from Green can "3": 176 °T Distance: 1.13 nm | No. 922006 (worked solution) |
| 7 | Bearing from Westfield church spire: 057 °T Distance: 2.26 nm | No. 922007 (worked solution) |
| 8 | Bearing from Mill stack: 357 °T Distance: 1.58 nm | No. 922008 (worked solution) |