Worksheet 392 · Skill 4
Two-bearing fix
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At 1535 you take two bearings with a hand-bearing compass: Mill stack bears 180°M and Westfield church spire bears 249°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 1605 you take two bearings with a hand-bearing compass: Heron Point Light bears 248°M and Kittle water tank bears 145°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 1255 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 097°M and Heron Point Light bears 178°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 1735 you take two bearings with a hand-bearing compass: Kittle water tank bears 213°M and Gannet Rock daybeacon bears 289°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 0930 you take two bearings with a hand-bearing compass: Mill stack bears 211°M and Westfield church spire bears 285°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 1310 you take two bearings with a hand-bearing compass: Mill stack bears 208°M and Heron Point Light bears 258°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 0705 you take two bearings with a hand-bearing compass: Westfield church spire bears 325°M and Gannet Rock daybeacon bears 082°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 1545 you take two bearings with a hand-bearing compass: Mill stack bears 182°M and Heron Point Light bears 240°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 296 °T Distance: 3.03 nm | No. 392001 (worked solution) |
| 2 | Bearing from Green can "3": 092 °T Distance: 1.44 nm | No. 392002 (worked solution) |
| 3 | Bearing from Westfield church spire: 131 °T Distance: 2.11 nm | No. 392003 (worked solution) |
| 4 | Bearing from Bell buoy "HS": 175 °T Distance: 4.37 nm | No. 392004 (worked solution) |
| 5 | Bearing from Green can "3": 107 °T Distance: 1.79 nm | No. 392005 (worked solution) |
| 6 | Bearing from Green can "3": 135 °T Distance: 1.71 nm | No. 392006 (worked solution) |
| 7 | Bearing from Heron Point Light: 071 °T Distance: 0.94 nm | No. 392007 (worked solution) |
| 8 | Bearing from Red nun "2": 062 °T Distance: 0.95 nm | No. 392008 (worked solution) |