Worksheet 514 · Skill 4
Two-bearing fix
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At 0855 you take two bearings with a hand-bearing compass: Kittle water tank bears 170°M and Heron Point Light bears 265°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 1555 you take two bearings with a hand-bearing compass: Mill stack bears 166°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 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 1225 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 088°M and Westfield church spire bears 320°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 1755 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 097°M and Mill stack bears 178°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: Westfield church spire bears 314°M and Gannet Rock daybeacon bears 076°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 0740 you take two bearings with a hand-bearing compass: Westfield church spire bears 249°M and Mill stack bears 169°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 1325 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 169°M and Heron Point Light 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 1250 you take two bearings with a hand-bearing compass: Heron Point Light bears 256°M and Mill stack bears 189°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 Tern Island tower: 140 °T Distance: 3.71 nm | No. 514001 (worked solution) |
| 2 | Bearing from Red nun "2": 336 °T Distance: 3.62 nm | No. 514002 (worked solution) |
| 3 | Bearing from Green can "1": 249 °T Distance: 1.18 nm | No. 514003 (worked solution) |
| 4 | Bearing from Green can "3": 217 °T Distance: 1.13 nm | No. 514004 (worked solution) |
| 5 | Bearing from Green can "1": 154 °T Distance: 1.38 nm | No. 514005 (worked solution) |
| 6 | Bearing from Green can "3": 314 °T Distance: 3.23 nm | No. 514006 (worked solution) |
| 7 | Bearing from Tern Island tower: 136 °T Distance: 2.17 nm | No. 514007 (worked solution) |
| 8 | Bearing from Red nun "2": 114 °T Distance: 1.43 nm | No. 514008 (worked solution) |