Worksheet 285 · Skill 4
Two-bearing fix
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At 0710 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 112°M and Heron Point Light bears 185°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 1600 you take two bearings with a hand-bearing compass: Kittle water tank bears 150°M and Mill stack bears 215°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 Gannet Rock daybeacon to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Gannet Rock daybeacon: ________ °T Distance: ________ nm
At 0920 you take two bearings with a hand-bearing compass: Kittle water tank bears 150°M and Heron Point Light bears 246°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 1640 you take two bearings with a hand-bearing compass: Kittle water tank bears 153°M and Mill stack bears 221°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 Gannet Rock daybeacon to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Gannet Rock daybeacon: ________ °T Distance: ________ nm
At 1435 you take two bearings with a hand-bearing compass: Heron Point Light bears 245°M and Kittle water tank bears 146°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 1730 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 127°M and Heron Point Light bears 254°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 1010 you take two bearings with a hand-bearing compass: Mill stack bears 188°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 1120 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 313°M and Kittle water tank 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 Bell buoy "HS" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Bell buoy "HS": ________ °T Distance: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Westfield church spire: 072 °T Distance: 1.85 nm | No. 285001 (worked solution) |
| 2 | Bearing from Gannet Rock daybeacon: 295 °T Distance: 1.44 nm | No. 285002 (worked solution) |
| 3 | Bearing from Tern Island tower: 180 °T Distance: 1.25 nm | No. 285003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 292 °T Distance: 0.93 nm | No. 285004 (worked solution) |
| 5 | Bearing from Green can "3": 080 °T Distance: 1.33 nm | No. 285005 (worked solution) |
| 6 | Bearing from Tern Island tower: 158 °T Distance: 2.03 nm | No. 285006 (worked solution) |
| 7 | Bearing from Red nun "2": 041 °T Distance: 1.98 nm | No. 285007 (worked solution) |
| 8 | Bearing from Bell buoy "HS": 179 °T Distance: 5.49 nm | No. 285008 (worked solution) |