Worksheet 220 · Skill 4
Two-bearing fix
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At 0800 you take two bearings with a hand-bearing compass: Mill stack bears 178°M and Westfield church spire 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 0715 you take two bearings with a hand-bearing compass: Mill stack bears 185°M and Westfield church spire bears 275°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 0810 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 099°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 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 1610 you take two bearings with a hand-bearing compass: Heron Point Light bears 171°M and Gannet Rock daybeacon bears 095°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 1325 you take two bearings with a hand-bearing compass: Westfield church spire bears 234°M and Gannet Rock daybeacon bears 125°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 0950 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 112°M and Mill stack bears 188°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 1145 you take two bearings with a hand-bearing compass: Heron Point Light bears 207°M and Gannet Rock daybeacon bears 097°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 1525 you take two bearings with a hand-bearing compass: Heron Point Light bears 255°M and Kittle water tank bears 164°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 Gannet Rock daybeacon to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Gannet Rock daybeacon: ________ °T Distance: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 332 °T Distance: 2.49 nm | No. 220001 (worked solution) |
| 2 | Bearing from Red nun "2": 033 °T Distance: 1.88 nm | No. 220002 (worked solution) |
| 3 | Bearing from Green can "1": 295 °T Distance: 2.03 nm | No. 220003 (worked solution) |
| 4 | Bearing from Westfield church spire: 140 °T Distance: 2.18 nm | No. 220004 (worked solution) |
| 5 | Bearing from Red nun "2": 331 °T Distance: 4.09 nm | No. 220005 (worked solution) |
| 6 | Bearing from Red nun "2": 054 °T Distance: 1.59 nm | No. 220006 (worked solution) |
| 7 | Bearing from Green can "1": 299 °T Distance: 1.23 nm | No. 220007 (worked solution) |
| 8 | Bearing from Gannet Rock daybeacon: 345 °T Distance: 0.85 nm | No. 220008 (worked solution) |