Worksheet 470 · Skill 4
Two-bearing fix
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At 1315 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 129°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 0755 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 123°M and Heron Point Light bears 195°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 1710 you take two bearings with a hand-bearing compass: Mill stack bears 199°M and Heron Point Light bears 256°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 1445 you take two bearings with a hand-bearing compass: Heron Point Light bears 252°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 1530 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 108°M and Mill stack bears 198°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 1200 you take two bearings with a hand-bearing compass: Mill stack bears 205°M and Westfield church spire bears 300°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 1300 you take two bearings with a hand-bearing compass: Heron Point Light bears 268°M and Mill stack bears 183°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 1020 you take two bearings with a hand-bearing compass: Westfield church spire bears 249°M and Mill stack bears 179°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 "3": 326 °T Distance: 2.70 nm | No. 470001 (worked solution) |
| 2 | Bearing from Westfield church spire: 056 °T Distance: 3.16 nm | No. 470002 (worked solution) |
| 3 | Bearing from Green can "3": 154 °T Distance: 1.39 nm | No. 470003 (worked solution) |
| 4 | Bearing from Green can "3": 176 °T Distance: 1.14 nm | No. 470004 (worked solution) |
| 5 | Bearing from Green can "3": 116 °T Distance: 0.81 nm | No. 470005 (worked solution) |
| 6 | Bearing from Green can "3": 162 °T Distance: 2.28 nm | No. 470006 (worked solution) |
| 7 | Bearing from Red nun "2": 144 °T Distance: 1.79 nm | No. 470007 (worked solution) |
| 8 | Bearing from Green can "3": 338 °T Distance: 3.09 nm | No. 470008 (worked solution) |