Worksheet 189 · Skill 4
Two-bearing fix
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At 1010 you take two bearings with a hand-bearing compass: Mill stack bears 160°M and Westfield church spire 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 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 1005 you take two bearings with a hand-bearing compass: Heron Point Light bears 248°M and Mill stack bears 191°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 0945 you take two bearings with a hand-bearing compass: Heron Point Light bears 189°M and Westfield church spire bears 269°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 205°M and Gannet Rock daybeacon bears 123°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 1740 you take two bearings with a hand-bearing compass: Kittle water tank bears 157°M and Mill stack bears 220°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 1550 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 098°M and Heron Point Light bears 203°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 1050 you take two bearings with a hand-bearing compass: Heron Point Light bears 267°M and Mill stack 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 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 1700 you take two bearings with a hand-bearing compass: Heron Point Light bears 180°M and Westfield church spire 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 "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 Red nun "2": 323 °T Distance: 3.44 nm | No. 189001 (worked solution) |
| 2 | Bearing from Red nun "2": 084 °T Distance: 1.48 nm | No. 189002 (worked solution) |
| 3 | Bearing from Red nun "2": 307 °T Distance: 2.83 nm | No. 189003 (worked solution) |
| 4 | Bearing from Green can "3": 311 °T Distance: 2.84 nm | No. 189004 (worked solution) |
| 5 | Bearing from Gannet Rock daybeacon: 314 °T Distance: 1.02 nm | No. 189005 (worked solution) |
| 6 | Bearing from Green can "1": 301 °T Distance: 1.39 nm | No. 189006 (worked solution) |
| 7 | Bearing from Green can "1": 154 °T Distance: 1.11 nm | No. 189007 (worked solution) |
| 8 | Bearing from Green can "1": 317 °T Distance: 3.31 nm | No. 189008 (worked solution) |