Worksheet 133 · Skill 4
Two-bearing fix
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At 0745 you take two bearings with a hand-bearing compass: Mill stack bears 175°M and Westfield church spire bears 301°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: Heron Point Light bears 271°M and Mill stack bears 179°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 1315 you take two bearings with a hand-bearing compass: Heron Point Light bears 263°M and Mill stack 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 "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 1320 you take two bearings with a hand-bearing compass: Mill stack bears 203°M and Westfield church spire bears 299°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 1710 you take two bearings with a hand-bearing compass: Heron Point Light bears 268°M and Kittle water tank bears 153°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 1640 you take two bearings with a hand-bearing compass: Mill stack bears 193°M and Gannet Rock daybeacon bears 122°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 1500 you take two bearings with a hand-bearing compass: Heron Point Light bears 258°M and Westfield church spire bears 315°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 1525 you take two bearings with a hand-bearing compass: Mill stack bears 191°M and Gannet Rock daybeacon bears 097°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 Red nun "2": 143 °T Distance: 0.96 nm | No. 133001 (worked solution) |
| 2 | Bearing from Green can "1": 125 °T Distance: 1.84 nm | No. 133002 (worked solution) |
| 3 | Bearing from Green can "3": 162 °T Distance: 1.92 nm | No. 133003 (worked solution) |
| 4 | Bearing from Green can "3": 162 °T Distance: 2.12 nm | No. 133004 (worked solution) |
| 5 | Bearing from Gannet Rock daybeacon: 183 °T Distance: 0.87 nm | No. 133005 (worked solution) |
| 6 | Bearing from Tern Island tower: 230 °T Distance: 1.66 nm | No. 133006 (worked solution) |
| 7 | Bearing from Green can "1": 187 °T Distance: 0.82 nm | No. 133007 (worked solution) |
| 8 | Bearing from Green can "3": 170 °T Distance: 0.91 nm | No. 133008 (worked solution) |