Worksheet 423 · Skill 4
Two-bearing fix
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At 1705 you take two bearings with a hand-bearing compass: Heron Point Light bears 211°M and Westfield church spire bears 315°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 1015 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 101°M and Mill stack bears 166°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 1050 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 089°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 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 0925 you take two bearings with a hand-bearing compass: Heron Point Light bears 219°M and Gannet Rock daybeacon bears 123°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 1525 you take two bearings with a hand-bearing compass: Westfield church spire bears 282°M and Mill stack bears 208°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 0810 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 098°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 1430 you take two bearings with a hand-bearing compass: Heron Point Light bears 194°M and Gannet Rock daybeacon bears 131°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 1720 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 113°M and Heron Point Light bears 232°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 "1": 271 °T Distance: 1.17 nm | No. 423001 (worked solution) |
| 2 | Bearing from Green can "1": 014 °T Distance: 0.99 nm | No. 423002 (worked solution) |
| 3 | Bearing from Green can "1": 257 °T Distance: 1.70 nm | No. 423003 (worked solution) |
| 4 | Bearing from Green can "3": 321 °T Distance: 1.70 nm | No. 423004 (worked solution) |
| 5 | Bearing from Green can "3": 095 °T Distance: 1.62 nm | No. 423005 (worked solution) |
| 6 | Bearing from Green can "3": 225 °T Distance: 1.17 nm | No. 423006 (worked solution) |
| 7 | Bearing from Westfield church spire: 042 °T Distance: 3.97 nm | No. 423007 (worked solution) |
| 8 | Bearing from Red nun "2": 033 °T Distance: 1.39 nm | No. 423008 (worked solution) |