Worksheet 79 · Skill 4
Two-bearing fix
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At 0855 you take two bearings with a hand-bearing compass: Westfield church spire bears 261°M and Mill stack bears 193°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 0955 you take two bearings with a hand-bearing compass: Westfield church spire bears 300°M and Mill stack bears 174°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 1640 you take two bearings with a hand-bearing compass: Westfield church spire bears 264°M and Mill stack bears 188°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 1615 you take two bearings with a hand-bearing compass: Mill stack bears 224°M and Heron Point Light bears 274°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 1340 you take two bearings with a hand-bearing compass: Mill stack bears 220°M and Gannet Rock daybeacon bears 112°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 0745 you take two bearings with a hand-bearing compass: Heron Point Light bears 202°M and Gannet Rock daybeacon bears 124°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 1315 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 092°M and Westfield church spire bears 323°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 Heron Point Light to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Heron Point Light: ________ °T Distance: ________ nm
At 1300 you take two bearings with a hand-bearing compass: Westfield church spire bears 263°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 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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 302 °T Distance: 1.28 nm | No. 79001 (worked solution) |
| 2 | Bearing from Red nun "2": 142 °T Distance: 0.80 nm | No. 79002 (worked solution) |
| 3 | Bearing from Tern Island tower: 277 °T Distance: 1.70 nm | No. 79003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 231 °T Distance: 2.74 nm | No. 79004 (worked solution) |
| 5 | Bearing from Tern Island tower: 161 °T Distance: 2.36 nm | No. 79005 (worked solution) |
| 6 | Bearing from Green can "3": 311 °T Distance: 3.15 nm | No. 79006 (worked solution) |
| 7 | Bearing from Heron Point Light: 002 °T Distance: 1.38 nm | No. 79007 (worked solution) |
| 8 | Bearing from Green can "3": 313 °T Distance: 2.20 nm | No. 79008 (worked solution) |