Worksheet 620 · Skill 4
Two-bearing fix
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At 1130 you take two bearings with a hand-bearing compass: Westfield church spire bears 278°M and Heron Point Light bears 181°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 1750 you take two bearings with a hand-bearing compass: Heron Point Light bears 179°M and Westfield church spire bears 248°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 0845 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 109°M and Mill stack bears 159°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 1420 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 281°M and Kittle water tank bears 181°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 221°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 1650 you take two bearings with a hand-bearing compass: Mill stack bears 225°M and Kittle water tank 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 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 1050 you take two bearings with a hand-bearing compass: Kittle water tank bears 152°M and Westfield church spire bears 280°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 0825 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 244°M and Kittle water tank 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 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 Green can "1": 312 °T Distance: 2.92 nm | No. 620001 (worked solution) |
| 2 | Bearing from Green can "1": 319 °T Distance: 3.62 nm | No. 620002 (worked solution) |
| 3 | Bearing from Red nun "2": 312 °T Distance: 1.99 nm | No. 620003 (worked solution) |
| 4 | Bearing from Tern Island tower: 132 °T Distance: 3.87 nm | No. 620004 (worked solution) |
| 5 | Bearing from Green can "3": 327 °T Distance: 1.57 nm | No. 620005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 014 °T Distance: 1.36 nm | No. 620006 (worked solution) |
| 7 | Bearing from Tern Island tower: 165 °T Distance: 1.56 nm | No. 620007 (worked solution) |
| 8 | Bearing from Bell buoy "HS": 188 °T Distance: 2.63 nm | No. 620008 (worked solution) |