Worksheet 515 · Skill 4
Two-bearing fix
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At 1215 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 134°M and Mill stack 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 Tern Island tower to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Tern Island tower: ________ °T Distance: ________ nm
At 1355 you take two bearings with a hand-bearing compass: Westfield church spire bears 292°M and Heron Point Light bears 196°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 1110 you take two bearings with a hand-bearing compass: Mill stack bears 181°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 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 1505 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 097°M and Mill stack bears 149°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 0900 you take two bearings with a hand-bearing compass: Mill stack bears 171°M and Heron Point Light bears 262°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 1340 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 087°M and Mill stack bears 206°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 1145 you take two bearings with a hand-bearing compass: Westfield church spire bears 246°M and Gannet Rock daybeacon bears 118°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 1620 you take two bearings with a hand-bearing compass: Heron Point Light bears 224°M and Westfield church spire bears 306°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 Tern Island tower: 277 °T Distance: 1.81 nm | No. 515001 (worked solution) |
| 2 | Bearing from Green can "1": 315 °T Distance: 1.93 nm | No. 515002 (worked solution) |
| 3 | Bearing from Green can "3": 332 °T Distance: 1.53 nm | No. 515003 (worked solution) |
| 4 | Bearing from Green can "1": 299 °T Distance: 1.24 nm | No. 515004 (worked solution) |
| 5 | Bearing from Green can "1": 120 °T Distance: 1.26 nm | No. 515005 (worked solution) |
| 6 | Bearing from Green can "3": 143 °T Distance: 1.68 nm | No. 515006 (worked solution) |
| 7 | Bearing from Red nun "2": 321 °T Distance: 3.45 nm | No. 515007 (worked solution) |
| 8 | Bearing from Red nun "2": 253 °T Distance: 1.20 nm | No. 515008 (worked solution) |