Worksheet 985 · Skill 4
Two-bearing fix
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At 0850 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 101°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 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 1505 you take two bearings with a hand-bearing compass: Westfield church spire bears 283°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 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 1205 you take two bearings with a hand-bearing compass: Heron Point Light bears 239°M and Mill stack bears 183°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 1520 you take two bearings with a hand-bearing compass: Mill stack bears 180°M and Westfield church spire bears 289°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 1425 you take two bearings with a hand-bearing compass: Heron Point Light bears 183°M and Gannet Rock daybeacon bears 096°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 1410 you take two bearings with a hand-bearing compass: Mill stack bears 209°M and Gannet Rock daybeacon bears 123°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 1655 you take two bearings with a hand-bearing compass: Mill stack bears 217°M and Kittle water tank bears 167°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 1625 you take two bearings with a hand-bearing compass: Heron Point Light bears 221°M and Gannet Rock daybeacon bears 123°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 Westfield church spire: 117 °T Distance: 1.98 nm | No. 985001 (worked solution) |
| 2 | Bearing from Tern Island tower: 210 °T Distance: 2.03 nm | No. 985002 (worked solution) |
| 3 | Bearing from Red nun "2": 057 °T Distance: 1.07 nm | No. 985003 (worked solution) |
| 4 | Bearing from Green can "3": 227 °T Distance: 0.82 nm | No. 985004 (worked solution) |
| 5 | Bearing from Green can "1": 284 °T Distance: 1.99 nm | No. 985005 (worked solution) |
| 6 | Bearing from Tern Island tower: 179 °T Distance: 1.64 nm | No. 985006 (worked solution) |
| 7 | Bearing from Tern Island tower: 113 °T Distance: 1.55 nm | No. 985007 (worked solution) |
| 8 | Bearing from Green can "3": 324 °T Distance: 1.54 nm | No. 985008 (worked solution) |