Worksheet 407 · Skill 4
Two-bearing fix
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At 1345 you take two bearings with a hand-bearing compass: Westfield church spire bears 232°M and Gannet Rock daybeacon bears 129°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 0925 you take two bearings with a hand-bearing compass: Westfield church spire bears 269°M and Mill stack bears 176°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 1615 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 121°M and Heron Point Light bears 186°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 0800 you take two bearings with a hand-bearing compass: Westfield church spire bears 294°M and Mill stack bears 190°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 0700 you take two bearings with a hand-bearing compass: Heron Point Light bears 228°M and Gannet Rock daybeacon bears 119°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 1220 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 131°M and Westfield church spire bears 238°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 1100 you take two bearings with a hand-bearing compass: Kittle water tank bears 182°M and Gannet Rock daybeacon bears 306°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 1710 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 111°M and Heron Point Light bears 238°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 Green can "3": 317 °T Distance: 4.32 nm | No. 407001 (worked solution) |
| 2 | Bearing from Green can "3": 313 °T Distance: 1.65 nm | No. 407002 (worked solution) |
| 3 | Bearing from Westfield church spire: 044 °T Distance: 2.58 nm | No. 407003 (worked solution) |
| 4 | Bearing from Green can "3": 176 °T Distance: 1.24 nm | No. 407004 (worked solution) |
| 5 | Bearing from Green can "3": 324 °T Distance: 0.91 nm | No. 407005 (worked solution) |
| 6 | Bearing from Green can "3": 322 °T Distance: 3.91 nm | No. 407006 (worked solution) |
| 7 | Bearing from Tern Island tower: 137 °T Distance: 4.36 nm | No. 407007 (worked solution) |
| 8 | Bearing from Red nun "2": 053 °T Distance: 1.49 nm | No. 407008 (worked solution) |