Worksheet 685 · Skill 4
Two-bearing fix
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At 0910 you take two bearings with a hand-bearing compass: Heron Point Light bears 263°M and Westfield church spire bears 324°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 1220 you take two bearings with a hand-bearing compass: Heron Point Light bears 241°M and Mill stack bears 171°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 0730 you take two bearings with a hand-bearing compass: Mill stack bears 180°M and Gannet Rock daybeacon bears 105°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 1025 you take two bearings with a hand-bearing compass: Westfield church spire bears 255°M and Mill stack bears 182°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 0705 you take two bearings with a hand-bearing compass: Mill stack bears 157°M and Westfield church spire bears 271°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 1035 you take two bearings with a hand-bearing compass: Heron Point Light bears 173°M and Gannet Rock daybeacon bears 090°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 0800 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 111°M and Heron Point Light 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 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 0830 you take two bearings with a hand-bearing compass: Mill stack bears 183°M and Westfield church spire bears 257°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "1": 214 °T Distance: 1.38 nm | No. 685001 (worked solution) |
| 2 | Bearing from Green can "1": 059 °T Distance: 0.91 nm | No. 685002 (worked solution) |
| 3 | Bearing from Red nun "2": 049 °T Distance: 0.89 nm | No. 685003 (worked solution) |
| 4 | Bearing from Tern Island tower: 290 °T Distance: 2.57 nm | No. 685004 (worked solution) |
| 5 | Bearing from Red nun "2": 311 °T Distance: 2.51 nm | No. 685005 (worked solution) |
| 6 | Bearing from Green can "1": 261 °T Distance: 2.09 nm | No. 685006 (worked solution) |
| 7 | Bearing from Westfield church spire: 079 °T Distance: 2.00 nm | No. 685007 (worked solution) |
| 8 | Bearing from Tern Island tower: 288 °T Distance: 2.40 nm | No. 685008 (worked solution) |