Worksheet 701 · Skill 4
Two-bearing fix
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At 1555 you take two bearings with a hand-bearing compass: Heron Point Light bears 197°M and Gannet Rock daybeacon bears 120°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 1500 you take two bearings with a hand-bearing compass: Westfield church spire bears 291°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 1605 you take two bearings with a hand-bearing compass: Heron Point Light bears 202°M and Westfield church spire bears 266°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 1645 you take two bearings with a hand-bearing compass: Westfield church spire bears 284°M and Mill stack bears 189°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 1405 you take two bearings with a hand-bearing compass: Mill stack bears 154°M and Gannet Rock daybeacon bears 091°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 1755 you take two bearings with a hand-bearing compass: Westfield church spire bears 255°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 0825 you take two bearings with a hand-bearing compass: Westfield church spire bears 288°M and Mill stack bears 203°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 1010 you take two bearings with a hand-bearing compass: Mill stack bears 163°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 "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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Westfield church spire: 064 °T Distance: 3.03 nm | No. 701001 (worked solution) |
| 2 | Bearing from Green can "1": 016 °T Distance: 1.05 nm | No. 701002 (worked solution) |
| 3 | Bearing from Red nun "2": 326 °T Distance: 2.38 nm | No. 701003 (worked solution) |
| 4 | Bearing from Red nun "2": 062 °T Distance: 1.53 nm | No. 701004 (worked solution) |
| 5 | Bearing from Red nun "2": 234 °T Distance: 1.01 nm | No. 701005 (worked solution) |
| 6 | Bearing from Green can "3": 327 °T Distance: 2.61 nm | No. 701006 (worked solution) |
| 7 | Bearing from Green can "3": 128 °T Distance: 1.27 nm | No. 701007 (worked solution) |
| 8 | Bearing from Green can "1": 128 °T Distance: 0.81 nm | No. 701008 (worked solution) |