Worksheet 483 · Skill 4
Two-bearing fix
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At 1405 you take two bearings with a hand-bearing compass: Mill stack bears 212°M and Westfield church spire bears 280°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 1010 you take two bearings with a hand-bearing compass: Westfield church spire bears 325°M and Gannet Rock daybeacon bears 081°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 Heron Point Light to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Heron Point Light: ________ °T Distance: ________ nm
At 0750 you take two bearings with a hand-bearing compass: Heron Point Light bears 237°M and Mill stack bears 152°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 1420 you take two bearings with a hand-bearing compass: Heron Point Light bears 246°M and Gannet Rock daybeacon bears 116°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 1510 you take two bearings with a hand-bearing compass: Mill stack bears 173°M and Westfield church spire bears 291°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 1515 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 091°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 0710 you take two bearings with a hand-bearing compass: Westfield church spire bears 255°M and Heron Point Light bears 190°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 1430 you take two bearings with a hand-bearing compass: Westfield church spire bears 284°M and Mill stack bears 154°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 Tern Island tower: 165 °T Distance: 1.55 nm | No. 483001 (worked solution) |
| 2 | Bearing from Heron Point Light: 078 °T Distance: 0.99 nm | No. 483002 (worked solution) |
| 3 | Bearing from Red nun "2": 231 °T Distance: 1.14 nm | No. 483003 (worked solution) |
| 4 | Bearing from Green can "3": 093 °T Distance: 1.04 nm | No. 483004 (worked solution) |
| 5 | Bearing from Green can "1": 043 °T Distance: 1.19 nm | No. 483005 (worked solution) |
| 6 | Bearing from Green can "1": 265 °T Distance: 1.61 nm | No. 483006 (worked solution) |
| 7 | Bearing from Red nun "2": 316 °T Distance: 3.14 nm | No. 483007 (worked solution) |
| 8 | Bearing from Green can "1": 322 °T Distance: 2.16 nm | No. 483008 (worked solution) |