Worksheet 472 · Skill 4
Two-bearing fix
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At 1640 you take two bearings with a hand-bearing compass: Westfield church spire bears 265°M and Mill stack 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 "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 1515 you take two bearings with a hand-bearing compass: Mill stack bears 187°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 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 1550 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 075°M and Westfield church spire bears 305°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 1345 you take two bearings with a hand-bearing compass: Westfield church spire bears 315°M and Gannet Rock daybeacon bears 080°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 0840 you take two bearings with a hand-bearing compass: Mill stack bears 211°M and Westfield church spire bears 302°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 1410 you take two bearings with a hand-bearing compass: Heron Point Light bears 252°M and Kittle water tank bears 157°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
At 1110 you take two bearings with a hand-bearing compass: Heron Point Light bears 220°M and Gannet Rock daybeacon bears 127°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 1235 you take two bearings with a hand-bearing compass: Heron Point Light bears 261°M and Mill stack bears 148°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 353 °T Distance: 1.66 nm | No. 472001 (worked solution) |
| 2 | Bearing from Tern Island tower: 299 °T Distance: 2.06 nm | No. 472002 (worked solution) |
| 3 | Bearing from Red nun "2": 143 °T Distance: 1.86 nm | No. 472003 (worked solution) |
| 4 | Bearing from Green can "1": 172 °T Distance: 1.02 nm | No. 472004 (worked solution) |
| 5 | Bearing from Green can "3": 162 °T Distance: 2.64 nm | No. 472005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 317 °T Distance: 1.29 nm | No. 472006 (worked solution) |
| 7 | Bearing from Green can "3": 333 °T Distance: 1.77 nm | No. 472007 (worked solution) |
| 8 | Bearing from Green can "1": 180 °T Distance: 0.88 nm | No. 472008 (worked solution) |