Worksheet 861 · Skill 4
Two-bearing fix
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At 1120 you take two bearings with a hand-bearing compass: Mill stack bears 210°M and Westfield church spire bears 301°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 1600 you take two bearings with a hand-bearing compass: Mill stack bears 191°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 0800 you take two bearings with a hand-bearing compass: Mill stack bears 177°M and Westfield church spire bears 249°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 1615 you take two bearings with a hand-bearing compass: Heron Point Light bears 217°M and Gannet Rock daybeacon bears 113°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 1035 you take two bearings with a hand-bearing compass: Mill stack bears 153°M and Heron Point Light 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 "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 1335 you take two bearings with a hand-bearing compass: Heron Point Light bears 254°M and Kittle water tank bears 154°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
At 1720 you take two bearings with a hand-bearing compass: Mill stack bears 170°M and Gannet Rock daybeacon bears 110°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 1325 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 094°M and Mill stack bears 177°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 160 °T Distance: 2.52 nm | No. 861001 (worked solution) |
| 2 | Bearing from Tern Island tower: 237 °T Distance: 1.70 nm | No. 861002 (worked solution) |
| 3 | Bearing from Green can "3": 333 °T Distance: 3.07 nm | No. 861003 (worked solution) |
| 4 | Bearing from Red nun "2": 345 °T Distance: 1.54 nm | No. 861004 (worked solution) |
| 5 | Bearing from Green can "1": 314 °T Distance: 1.19 nm | No. 861005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 304 °T Distance: 1.16 nm | No. 861006 (worked solution) |
| 7 | Bearing from Red nun "2": 346 °T Distance: 1.21 nm | No. 861007 (worked solution) |
| 8 | Bearing from Green can "1": 072 °T Distance: 1.25 nm | No. 861008 (worked solution) |