Worksheet 509 · Skill 4
Two-bearing fix
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At 0940 you take two bearings with a hand-bearing compass: Heron Point Light bears 255°M and Mill stack bears 203°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 1525 you take two bearings with a hand-bearing compass: Heron Point Light bears 262°M and Mill stack bears 212°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 0900 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 114°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 1615 you take two bearings with a hand-bearing compass: Heron Point Light bears 224°M and Kittle water tank bears 142°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 1635 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 120°M and Heron Point Light bears 204°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 1615 you take two bearings with a hand-bearing compass: Westfield church spire bears 274°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 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 0720 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 114°M and Heron Point Light bears 193°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 1310 you take two bearings with a hand-bearing compass: Westfield church spire bears 315°M and Gannet Rock daybeacon bears 082°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": 138 °T Distance: 1.38 nm | No. 509001 (worked solution) |
| 2 | Bearing from Green can "3": 140 °T Distance: 2.04 nm | No. 509002 (worked solution) |
| 3 | Bearing from Red nun "2": 035 °T Distance: 1.48 nm | No. 509003 (worked solution) |
| 4 | Bearing from Green can "3": 343 °T Distance: 1.50 nm | No. 509004 (worked solution) |
| 5 | Bearing from Red nun "2": 337 °T Distance: 2.68 nm | No. 509005 (worked solution) |
| 6 | Bearing from Green can "3": 328 °T Distance: 0.90 nm | No. 509006 (worked solution) |
| 7 | Bearing from Westfield church spire: 074 °T Distance: 2.42 nm | No. 509007 (worked solution) |
| 8 | Bearing from Green can "1": 183 °T Distance: 0.86 nm | No. 509008 (worked solution) |