Worksheet 561 · Skill 4
Two-bearing fix
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At 0920 you take two bearings with a hand-bearing compass: Heron Point Light bears 278°M and Mill stack bears 158°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 1145 you take two bearings with a hand-bearing compass: Kittle water tank bears 149°M and Heron Point Light bears 247°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 1345 you take two bearings with a hand-bearing compass: Westfield church spire bears 253°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 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 1720 you take two bearings with a hand-bearing compass: Westfield church spire bears 305°M and Mill stack bears 227°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 1740 you take two bearings with a hand-bearing compass: Heron Point Light bears 263°M and Mill stack bears 202°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 1235 you take two bearings with a hand-bearing compass: Mill stack bears 186°M and Westfield church spire bears 259°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 1550 you take two bearings with a hand-bearing compass: Heron Point Light bears 214°M and Westfield church spire bears 277°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 1220 you take two bearings with a hand-bearing compass: Heron Point Light bears 239°M and Mill stack 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 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 Green can "1": 149 °T Distance: 1.70 nm | No. 561001 (worked solution) |
| 2 | Bearing from Tern Island tower: 180 °T Distance: 1.39 nm | No. 561002 (worked solution) |
| 3 | Bearing from Green can "3": 323 °T Distance: 2.80 nm | No. 561003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 227 °T Distance: 3.21 nm | No. 561004 (worked solution) |
| 5 | Bearing from Green can "3": 160 °T Distance: 1.93 nm | No. 561005 (worked solution) |
| 6 | Bearing from Tern Island tower: 289 °T Distance: 2.03 nm | No. 561006 (worked solution) |
| 7 | Bearing from Red nun "2": 335 °T Distance: 1.55 nm | No. 561007 (worked solution) |
| 8 | Bearing from Green can "3": 232 °T Distance: 0.94 nm | No. 561008 (worked solution) |