Worksheet 690 · Skill 4
Two-bearing fix
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At 1225 you take two bearings with a hand-bearing compass: Westfield church spire bears 226°M and Mill stack bears 152°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 1335 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 066°M and Westfield church spire bears 304°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 0925 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 094°M and Mill stack bears 148°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 1340 you take two bearings with a hand-bearing compass: Mill stack bears 179°M and Westfield church spire bears 265°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 0720 you take two bearings with a hand-bearing compass: Heron Point Light bears 218°M and Westfield church spire bears 276°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 0950 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 132°M and Westfield church spire bears 244°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 1610 you take two bearings with a hand-bearing compass: Kittle water tank bears 190°M and Gannet Rock daybeacon bears 311°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 0845 you take two bearings with a hand-bearing compass: Heron Point Light bears 192°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Red nun "2": 309 °T Distance: 4.22 nm | No. 690001 (worked solution) |
| 2 | Bearing from Mill stack: 019 °T Distance: 2.07 nm | No. 690002 (worked solution) |
| 3 | Bearing from Green can "1": 286 °T Distance: 0.97 nm | No. 690003 (worked solution) |
| 4 | Bearing from Green can "3": 327 °T Distance: 1.77 nm | No. 690004 (worked solution) |
| 5 | Bearing from Red nun "2": 348 °T Distance: 1.50 nm | No. 690005 (worked solution) |
| 6 | Bearing from Green can "3": 326 °T Distance: 3.47 nm | No. 690006 (worked solution) |
| 7 | Bearing from Tern Island tower: 137 °T Distance: 4.82 nm | No. 690007 (worked solution) |
| 8 | Bearing from Green can "1": 292 °T Distance: 1.75 nm | No. 690008 (worked solution) |