Worksheet 989 · Skill 4
Two-bearing fix
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At 0740 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 095°M and Heron Point Light 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 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 1105 you take two bearings with a hand-bearing compass: Westfield church spire bears 298°M and Mill stack bears 197°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: Westfield church spire bears 251°M and Mill stack 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 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 1120 you take two bearings with a hand-bearing compass: Heron Point Light bears 276°M and Kittle water tank 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 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 0805 you take two bearings with a hand-bearing compass: Heron Point Light bears 220°M and Gannet Rock daybeacon bears 091°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 1345 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 128°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 1320 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 032°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 Kittle water tank to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Kittle water tank: ________ °T Distance: ________ nm
At 1010 you take two bearings with a hand-bearing compass: Mill stack bears 164°M and Gannet Rock daybeacon bears 105°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "1": 280 °T Distance: 1.92 nm | No. 989001 (worked solution) |
| 2 | Bearing from Green can "3": 168 °T Distance: 1.84 nm | No. 989002 (worked solution) |
| 3 | Bearing from Tern Island tower: 308 °T Distance: 2.46 nm | No. 989003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 159 °T Distance: 1.99 nm | No. 989004 (worked solution) |
| 5 | Bearing from Green can "1": 266 °T Distance: 0.94 nm | No. 989005 (worked solution) |
| 6 | Bearing from Green can "3": 347 °T Distance: 1.42 nm | No. 989006 (worked solution) |
| 7 | Bearing from Kittle water tank: 319 °T Distance: 2.77 nm | No. 989007 (worked solution) |
| 8 | Bearing from Red nun "2": 318 °T Distance: 1.04 nm | No. 989008 (worked solution) |