Worksheet 487 · Skill 4
Two-bearing fix
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At 1455 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 063°M and Westfield church spire bears 306°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 1220 you take two bearings with a hand-bearing compass: Mill stack bears 154°M and Gannet Rock daybeacon bears 073°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 1630 you take two bearings with a hand-bearing compass: Heron Point Light bears 254°M and Mill stack bears 153°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 1355 you take two bearings with a hand-bearing compass: Heron Point Light bears 223°M and Kittle water tank bears 144°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 1740 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 069°M and Westfield church spire bears 311°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 1120 you take two bearings with a hand-bearing compass: Mill stack bears 144°M and Gannet Rock daybeacon bears 093°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 1345 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 099°M and Heron Point Light bears 170°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 0715 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 104°M and Heron Point Light bears 174°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Mill stack: 020 °T Distance: 1.81 nm | No. 487001 (worked solution) |
| 2 | Bearing from Green can "1": 153 °T Distance: 1.65 nm | No. 487002 (worked solution) |
| 3 | Bearing from Red nun "2": 202 °T Distance: 1.29 nm | No. 487003 (worked solution) |
| 4 | Bearing from Green can "3": 349 °T Distance: 1.76 nm | No. 487004 (worked solution) |
| 5 | Bearing from Mill stack: 348 °T Distance: 1.64 nm | No. 487005 (worked solution) |
| 6 | Bearing from Green can "1": 276 °T Distance: 1.23 nm | No. 487006 (worked solution) |
| 7 | Bearing from Westfield church spire: 133 °T Distance: 1.65 nm | No. 487007 (worked solution) |
| 8 | Bearing from Westfield church spire: 110 °T Distance: 1.29 nm | No. 487008 (worked solution) |