Worksheet 412 · Skill 4
Two-bearing fix
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At 1550 you take two bearings with a hand-bearing compass: Westfield church spire bears 318°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 0735 you take two bearings with a hand-bearing compass: Westfield church spire bears 237°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 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 1010 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 112°M and Mill stack bears 175°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 1005 you take two bearings with a hand-bearing compass: Mill stack bears 215°M and Gannet Rock daybeacon bears 141°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 1055 you take two bearings with a hand-bearing compass: Westfield church spire bears 275°M and Heron Point Light bears 222°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 1310 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 119°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 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 1030 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 095°M and Mill stack bears 150°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 1125 you take two bearings with a hand-bearing compass: Heron Point Light bears 201°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "1": 169 °T Distance: 1.49 nm | No. 412001 (worked solution) |
| 2 | Bearing from Red nun "2": 315 °T Distance: 3.85 nm | No. 412002 (worked solution) |
| 3 | Bearing from Green can "3": 287 °T Distance: 1.20 nm | No. 412003 (worked solution) |
| 4 | Bearing from Tern Island tower: 154 °T Distance: 1.63 nm | No. 412004 (worked solution) |
| 5 | Bearing from Green can "3": 298 °T Distance: 1.38 nm | No. 412005 (worked solution) |
| 6 | Bearing from Red nun "2": 340 °T Distance: 2.43 nm | No. 412006 (worked solution) |
| 7 | Bearing from Green can "1": 295 °T Distance: 0.91 nm | No. 412007 (worked solution) |
| 8 | Bearing from Green can "1": 290 °T Distance: 1.42 nm | No. 412008 (worked solution) |