Worksheet 161 · Skill 4
Two-bearing fix
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At 0815 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 121°M and Mill stack bears 218°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 1700 you take two bearings with a hand-bearing compass: Heron Point Light bears 252°M and Mill stack bears 184°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 1105 you take two bearings with a hand-bearing compass: Heron Point Light bears 203°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 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 1740 you take two bearings with a hand-bearing compass: Westfield church spire bears 273°M and Mill stack bears 163°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 0750 you take two bearings with a hand-bearing compass: Mill stack bears 201°M and Heron Point Light bears 261°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 081°M and Mill stack bears 144°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 1030 you take two bearings with a hand-bearing compass: Mill stack bears 196°M and Gannet Rock daybeacon bears 102°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 1400 you take two bearings with a hand-bearing compass: Heron Point Light bears 196°M and Gannet Rock daybeacon bears 133°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 161 °T Distance: 2.14 nm | No. 161001 (worked solution) |
| 2 | Bearing from Red nun "2": 111 °T Distance: 1.10 nm | No. 161002 (worked solution) |
| 3 | Bearing from Red nun "2": 337 °T Distance: 2.79 nm | No. 161003 (worked solution) |
| 4 | Bearing from Red nun "2": 324 °T Distance: 2.00 nm | No. 161004 (worked solution) |
| 5 | Bearing from Green can "3": 159 °T Distance: 1.77 nm | No. 161005 (worked solution) |
| 6 | Bearing from Green can "1": 189 °T Distance: 1.01 nm | No. 161006 (worked solution) |
| 7 | Bearing from Green can "3": 141 °T Distance: 0.83 nm | No. 161007 (worked solution) |
| 8 | Bearing from Westfield church spire: 043 °T Distance: 4.25 nm | No. 161008 (worked solution) |