Worksheet 566 · Skill 4
Two-bearing fix
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At 1745 you take two bearings with a hand-bearing compass: Mill stack bears 171°M and Westfield church spire bears 281°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 1455 you take two bearings with a hand-bearing compass: Westfield church spire bears 253°M and Mill stack bears 185°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 0740 you take two bearings with a hand-bearing compass: Westfield church spire bears 290°M and Mill stack bears 177°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 1025 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 133°M and Westfield church spire bears 238°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 151°M and Gannet Rock daybeacon bears 091°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 1415 you take two bearings with a hand-bearing compass: Mill stack bears 178°M and Westfield church spire bears 253°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 1250 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 071°M and Mill stack 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 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 1605 you take two bearings with a hand-bearing compass: Westfield church spire bears 253°M and Mill stack bears 175°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 Red nun "2": 351 °T Distance: 1.13 nm | No. 566001 (worked solution) |
| 2 | Bearing from Tern Island tower: 301 °T Distance: 2.40 nm | No. 566002 (worked solution) |
| 3 | Bearing from Green can "3": 233 °T Distance: 1.01 nm | No. 566003 (worked solution) |
| 4 | Bearing from Green can "3": 326 °T Distance: 3.93 nm | No. 566004 (worked solution) |
| 5 | Bearing from Red nun "2": 239 °T Distance: 1.21 nm | No. 566005 (worked solution) |
| 6 | Bearing from Green can "3": 334 °T Distance: 2.74 nm | No. 566006 (worked solution) |
| 7 | Bearing from Red nun "2": 136 °T Distance: 2.21 nm | No. 566007 (worked solution) |
| 8 | Bearing from Green can "3": 326 °T Distance: 2.78 nm | No. 566008 (worked solution) |