Worksheet 663 · Skill 4
Two-bearing fix
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At 1420 you take two bearings with a hand-bearing compass: Mill stack bears 222°M and Kittle water tank bears 155°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 0950 you take two bearings with a hand-bearing compass: Mill stack bears 175°M and Westfield church spire bears 292°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 1000 you take two bearings with a hand-bearing compass: Westfield church spire bears 295°M and Heron Point Light bears 201°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 0755 you take two bearings with a hand-bearing compass: Westfield church spire bears 275°M and Mill stack bears 194°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 1435 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 068°M and Mill stack bears 187°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 1400 you take two bearings with a hand-bearing compass: Mill stack bears 188°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
At 1020 you take two bearings with a hand-bearing compass: Heron Point Light bears 233°M and Mill stack bears 159°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 1545 you take two bearings with a hand-bearing compass: Heron Point Light bears 185°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 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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Gannet Rock daybeacon: 299 °T Distance: 0.83 nm | No. 663001 (worked solution) |
| 2 | Bearing from Green can "3": 231 °T Distance: 1.19 nm | No. 663002 (worked solution) |
| 3 | Bearing from Green can "1": 315 °T Distance: 1.65 nm | No. 663003 (worked solution) |
| 4 | Bearing from Green can "3": 038 °T Distance: 0.90 nm | No. 663004 (worked solution) |
| 5 | Bearing from Green can "1": 128 °T Distance: 2.28 nm | No. 663005 (worked solution) |
| 6 | Bearing from Tern Island tower: 299 °T Distance: 1.92 nm | No. 663006 (worked solution) |
| 7 | Bearing from Green can "3": 238 °T Distance: 2.25 nm | No. 663007 (worked solution) |
| 8 | Bearing from Red nun "2": 311 °T Distance: 3.35 nm | No. 663008 (worked solution) |