Worksheet 241 · Skill 4
Two-bearing fix
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At 1725 you take two bearings with a hand-bearing compass: Mill stack bears 178°M and Heron Point Light bears 268°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 0820 you take two bearings with a hand-bearing compass: Westfield church spire bears 259°M and Mill stack bears 161°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 0825 you take two bearings with a hand-bearing compass: Kittle water tank bears 180°M and Gannet Rock daybeacon bears 241°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 0745 you take two bearings with a hand-bearing compass: Mill stack bears 179°M and Gannet Rock daybeacon bears 107°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 0815 you take two bearings with a hand-bearing compass: Westfield church spire bears 302°M and Mill stack 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 1335 you take two bearings with a hand-bearing compass: Heron Point Light bears 211°M and Mill stack bears 156°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: Heron Point Light bears 177°M and Gannet Rock daybeacon bears 092°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 1300 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 118°M and Heron Point Light bears 246°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "1": 121 °T Distance: 1.70 nm | No. 241001 (worked solution) |
| 2 | Bearing from Red nun "2": 323 °T Distance: 2.82 nm | No. 241002 (worked solution) |
| 3 | Bearing from Tern Island tower: 123 °T Distance: 3.29 nm | No. 241003 (worked solution) |
| 4 | Bearing from Red nun "2": 038 °T Distance: 0.94 nm | No. 241004 (worked solution) |
| 5 | Bearing from Red nun "2": 133 °T Distance: 1.81 nm | No. 241005 (worked solution) |
| 6 | Bearing from Green can "1": 327 °T Distance: 1.28 nm | No. 241006 (worked solution) |
| 7 | Bearing from Green can "1": 269 °T Distance: 2.04 nm | No. 241007 (worked solution) |
| 8 | Bearing from Green can "3": 090 °T Distance: 1.14 nm | No. 241008 (worked solution) |