Worksheet 312 · Skill 4
Two-bearing fix
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At 0745 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 011°M and Heron Point Light bears 277°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 Kittle water tank to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Kittle water tank: ________ °T Distance: ________ nm
At 0810 you take two bearings with a hand-bearing compass: Mill stack bears 152°M and Gannet Rock daybeacon bears 094°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 0850 you take two bearings with a hand-bearing compass: Westfield church spire bears 329°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 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 1240 you take two bearings with a hand-bearing compass: Westfield church spire bears 256°M and Mill stack bears 164°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 0845 you take two bearings with a hand-bearing compass: Mill stack bears 188°M and Westfield church spire bears 277°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 1145 you take two bearings with a hand-bearing compass: Mill stack bears 194°M and Westfield church spire bears 296°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 1335 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 108°M and Heron Point Light bears 221°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 1705 you take two bearings with a hand-bearing compass: Heron Point Light bears 176°M and Gannet Rock daybeacon bears 094°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 Kittle water tank: 303 °T Distance: 1.84 nm | No. 312001 (worked solution) |
| 2 | Bearing from Red nun "2": 255 °T Distance: 1.21 nm | No. 312002 (worked solution) |
| 3 | Bearing from Heron Point Light: 355 °T Distance: 1.11 nm | No. 312003 (worked solution) |
| 4 | Bearing from Red nun "2": 330 °T Distance: 2.88 nm | No. 312004 (worked solution) |
| 5 | Bearing from Red nun "2": 043 °T Distance: 1.90 nm | No. 312005 (worked solution) |
| 6 | Bearing from Green can "3": 170 °T Distance: 1.55 nm | No. 312006 (worked solution) |
| 7 | Bearing from Red nun "2": 340 °T Distance: 1.07 nm | No. 312007 (worked solution) |
| 8 | Bearing from Green can "1": 276 °T Distance: 2.12 nm | No. 312008 (worked solution) |