Worksheet 460 · Skill 4
Two-bearing fix
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At 1250 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 066°M and Westfield church spire bears 303°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
At 1745 you take two bearings with a hand-bearing compass: Heron Point Light bears 244°M and Kittle water tank bears 148°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 1740 you take two bearings with a hand-bearing compass: Mill stack bears 191°M and Westfield church spire bears 262°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 1620 you take two bearings with a hand-bearing compass: Westfield church spire bears 288°M and Mill stack bears 161°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 1100 you take two bearings with a hand-bearing compass: Heron Point Light bears 208°M and Westfield church spire bears 261°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 0810 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 288°M and Kittle water tank 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 Bell buoy "HS" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Bell buoy "HS": ________ °T Distance: ________ nm
At 1730 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Gannet Rock daybeacon bears 126°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 1335 you take two bearings with a hand-bearing compass: Heron Point Light bears 241°M and Westfield church spire bears 298°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 Mill stack: 022 °T Distance: 2.18 nm | No. 460001 (worked solution) |
| 2 | Bearing from Tern Island tower: 194 °T Distance: 1.22 nm | No. 460002 (worked solution) |
| 3 | Bearing from Tern Island tower: 291 °T Distance: 1.42 nm | No. 460003 (worked solution) |
| 4 | Bearing from Red nun "2": 308 °T Distance: 1.23 nm | No. 460004 (worked solution) |
| 5 | Bearing from Green can "3": 307 °T Distance: 2.52 nm | No. 460005 (worked solution) |
| 6 | Bearing from Bell buoy "HS": 176 °T Distance: 4.29 nm | No. 460006 (worked solution) |
| 7 | Bearing from Green can "3": 333 °T Distance: 1.62 nm | No. 460007 (worked solution) |
| 8 | Bearing from Green can "3": 228 °T Distance: 1.73 nm | No. 460008 (worked solution) |