Worksheet 492 · Skill 4
Two-bearing fix
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At 1430 you take two bearings with a hand-bearing compass: Mill stack bears 193°M and Gannet Rock daybeacon bears 084°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 1035 you take two bearings with a hand-bearing compass: Kittle water tank bears 214°M and Gannet Rock daybeacon bears 283°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
At 1540 you take two bearings with a hand-bearing compass: Mill stack bears 170°M and Heron Point Light bears 228°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 1315 you take two bearings with a hand-bearing compass: Mill stack bears 202°M and Westfield church spire bears 300°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 1735 you take two bearings with a hand-bearing compass: Heron Point Light bears 260°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 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 1200 you take two bearings with a hand-bearing compass: Heron Point Light bears 252°M and Mill stack bears 182°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 1005 you take two bearings with a hand-bearing compass: Heron Point Light bears 266°M and Kittle water tank bears 149°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 1040 you take two bearings with a hand-bearing compass: Mill stack bears 210°M and Gannet Rock daybeacon bears 136°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 173 °T Distance: 1.67 nm | No. 492001 (worked solution) |
| 2 | Bearing from Bell buoy "HS": 172 °T Distance: 4.13 nm | No. 492002 (worked solution) |
| 3 | Bearing from Green can "1": 021 °T Distance: 1.31 nm | No. 492003 (worked solution) |
| 4 | Bearing from Green can "3": 165 °T Distance: 2.19 nm | No. 492004 (worked solution) |
| 5 | Bearing from Gannet Rock daybeacon: 263 °T Distance: 1.10 nm | No. 492005 (worked solution) |
| 6 | Bearing from Red nun "2": 116 °T Distance: 1.02 nm | No. 492006 (worked solution) |
| 7 | Bearing from Green can "3": 117 °T Distance: 3.47 nm | No. 492007 (worked solution) |
| 8 | Bearing from Tern Island tower: 167 °T Distance: 1.31 nm | No. 492008 (worked solution) |