Worksheet 692 · Skill 4
Two-bearing fix
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At 0950 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 085°M and Westfield church spire bears 324°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 Heron Point Light to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Heron Point Light: ________ °T Distance: ________ nm
At 0800 you take two bearings with a hand-bearing compass: Heron Point Light bears 190°M and Gannet Rock daybeacon bears 098°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 1750 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 104°M and Heron Point Light bears 182°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 Westfield church spire to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Westfield church spire: ________ °T Distance: ________ nm
At 1330 you take two bearings with a hand-bearing compass: Mill stack bears 208°M and Westfield church spire bears 278°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 1300 you take two bearings with a hand-bearing compass: Mill stack bears 183°M and Gannet Rock daybeacon bears 081°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 1735 you take two bearings with a hand-bearing compass: Westfield church spire bears 293°M and Mill stack bears 210°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 0725 you take two bearings with a hand-bearing compass: Mill stack bears 183°M and Westfield church spire bears 254°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 0730 you take two bearings with a hand-bearing compass: Westfield church spire bears 306°M and Gannet Rock daybeacon bears 072°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 Mill stack to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Mill stack: ________ °T Distance: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Heron Point Light: 048 °T Distance: 0.93 nm | No. 692001 (worked solution) |
| 2 | Bearing from Green can "1": 293 °T Distance: 1.84 nm | No. 692002 (worked solution) |
| 3 | Bearing from Westfield church spire: 106 °T Distance: 1.71 nm | No. 692003 (worked solution) |
| 4 | Bearing from Tern Island tower: 175 °T Distance: 1.23 nm | No. 692004 (worked solution) |
| 5 | Bearing from Red nun "2": 137 °T Distance: 1.49 nm | No. 692005 (worked solution) |
| 6 | Bearing from Green can "3": 140 °T Distance: 1.91 nm | No. 692006 (worked solution) |
| 7 | Bearing from Tern Island tower: 294 °T Distance: 2.52 nm | No. 692007 (worked solution) |
| 8 | Bearing from Mill stack: 001 °T Distance: 2.04 nm | No. 692008 (worked solution) |