Worksheet 923 · Skill 4
Two-bearing fix
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At 1625 you take two bearings with a hand-bearing compass: Kittle water tank bears 155°M and Mill stack bears 213°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 0740 you take two bearings with a hand-bearing compass: Westfield church spire bears 248°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 0900 you take two bearings with a hand-bearing compass: Heron Point Light bears 235°M and Westfield church spire bears 297°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 0955 you take two bearings with a hand-bearing compass: Westfield church spire bears 259°M and Mill stack bears 173°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 1445 you take two bearings with a hand-bearing compass: Westfield church spire bears 261°M and Kittle water tank bears 143°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 1545 you take two bearings with a hand-bearing compass: Heron Point Light bears 266°M and Mill stack bears 181°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 1055 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Gannet Rock daybeacon bears 109°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 1050 you take two bearings with a hand-bearing compass: Westfield church spire bears 283°M and Mill stack bears 215°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 156 °T Distance: 1.44 nm | No. 923001 (worked solution) |
| 2 | Bearing from Red nun "2": 329 °T Distance: 3.31 nm | No. 923002 (worked solution) |
| 3 | Bearing from Green can "3": 238 °T Distance: 1.84 nm | No. 923003 (worked solution) |
| 4 | Bearing from Green can "3": 316 °T Distance: 2.45 nm | No. 923004 (worked solution) |
| 5 | Bearing from Green can "3": 340 °T Distance: 2.03 nm | No. 923005 (worked solution) |
| 6 | Bearing from Red nun "2": 145 °T Distance: 1.65 nm | No. 923006 (worked solution) |
| 7 | Bearing from Red nun "2": 040 °T Distance: 1.13 nm | No. 923007 (worked solution) |
| 8 | Bearing from Gannet Rock daybeacon: 294 °T Distance: 1.45 nm | No. 923008 (worked solution) |