Worksheet 157 · Skill 4
Two-bearing fix
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At 1200 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 127°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 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 1750 you take two bearings with a hand-bearing compass: Mill stack bears 171°M and Westfield church spire bears 245°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 0950 you take two bearings with a hand-bearing compass: Heron Point Light bears 265°M and Mill stack bears 192°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 1650 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 106°M and Heron Point Light bears 186°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 1605 you take two bearings with a hand-bearing compass: Mill stack bears 175°M and Westfield church spire bears 288°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 1800 you take two bearings with a hand-bearing compass: Mill stack bears 206°M and Heron Point Light bears 263°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 0720 you take two bearings with a hand-bearing compass: Heron Point Light bears 174°M and Westfield church spire bears 228°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 0905 you take two bearings with a hand-bearing compass: Kittle water tank bears 169°M and Heron Point Light bears 255°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 347 °T Distance: 1.33 nm | No. 157001 (worked solution) |
| 2 | Bearing from Green can "3": 320 °T Distance: 3.42 nm | No. 157002 (worked solution) |
| 3 | Bearing from Red nun "2": 130 °T Distance: 1.85 nm | No. 157003 (worked solution) |
| 4 | Bearing from Westfield church spire: 098 °T Distance: 1.86 nm | No. 157004 (worked solution) |
| 5 | Bearing from Green can "3": 248 °T Distance: 1.07 nm | No. 157005 (worked solution) |
| 6 | Bearing from Green can "3": 153 °T Distance: 1.97 nm | No. 157006 (worked solution) |
| 7 | Bearing from Green can "1": 317 °T Distance: 4.13 nm | No. 157007 (worked solution) |
| 8 | Bearing from Gannet Rock daybeacon: 007 °T Distance: 0.96 nm | No. 157008 (worked solution) |