Worksheet 788 · Skill 4
Two-bearing fix
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At 1500 you take two bearings with a hand-bearing compass: Heron Point Light bears 200°M and Gannet Rock daybeacon bears 116°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 1010 you take two bearings with a hand-bearing compass: Heron Point Light bears 226°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 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 1635 you take two bearings with a hand-bearing compass: Westfield church spire bears 285°M and Mill stack bears 159°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 0735 you take two bearings with a hand-bearing compass: Mill stack bears 179°M and Westfield church spire bears 272°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 1000 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 128°M and Westfield church spire bears 251°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 0700 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 119°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 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 0835 you take two bearings with a hand-bearing compass: Mill stack bears 177°M and Westfield church spire bears 243°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 1215 you take two bearings with a hand-bearing compass: Mill stack bears 226°M and Kittle water tank bears 150°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Red nun "2": 326 °T Distance: 2.59 nm | No. 788001 (worked solution) |
| 2 | Bearing from Green can "1": 017 °T Distance: 1.36 nm | No. 788002 (worked solution) |
| 3 | Bearing from Red nun "2": 307 °T Distance: 1.62 nm | No. 788003 (worked solution) |
| 4 | Bearing from Green can "3": 316 °T Distance: 1.26 nm | No. 788004 (worked solution) |
| 5 | Bearing from Green can "3": 321 °T Distance: 2.98 nm | No. 788005 (worked solution) |
| 6 | Bearing from Tern Island tower: 158 °T Distance: 2.28 nm | No. 788006 (worked solution) |
| 7 | Bearing from Green can "3": 336 °T Distance: 3.60 nm | No. 788007 (worked solution) |
| 8 | Bearing from Tern Island tower: 158 °T Distance: 2.87 nm | No. 788008 (worked solution) |