Worksheet 813 · Skill 4
Two-bearing fix
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At 0705 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 122°M and Westfield church spire bears 242°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 1640 you take two bearings with a hand-bearing compass: Heron Point Light bears 209°M and Westfield church spire bears 270°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 1640 you take two bearings with a hand-bearing compass: Mill stack bears 169°M and Westfield church spire bears 254°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 1740 you take two bearings with a hand-bearing compass: Westfield church spire bears 287°M and Heron Point Light bears 187°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 1225 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 125°M and Mill stack bears 184°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: Mill stack bears 154°M and Gannet Rock daybeacon bears 092°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 0725 you take two bearings with a hand-bearing compass: Heron Point Light bears 190°M and Gannet Rock daybeacon bears 106°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 0825 you take two bearings with a hand-bearing compass: Mill stack bears 160°M and Heron Point Light bears 225°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 Red nun "2": 329 °T Distance: 3.62 nm | No. 813001 (worked solution) |
| 2 | Bearing from Red nun "2": 335 °T Distance: 2.01 nm | No. 813002 (worked solution) |
| 3 | Bearing from Green can "3": 311 °T Distance: 2.95 nm | No. 813003 (worked solution) |
| 4 | Bearing from Green can "1": 313 °T Distance: 2.45 nm | No. 813004 (worked solution) |
| 5 | Bearing from Green can "3": 341 °T Distance: 1.24 nm | No. 813005 (worked solution) |
| 6 | Bearing from Red nun "2": 241 °T Distance: 1.01 nm | No. 813006 (worked solution) |
| 7 | Bearing from Westfield church spire: 098 °T Distance: 2.08 nm | No. 813007 (worked solution) |
| 8 | Bearing from Green can "3": 249 °T Distance: 2.19 nm | No. 813008 (worked solution) |