Worksheet 707 · Skill 4
Two-bearing fix
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At 0945 you take two bearings with a hand-bearing compass: Westfield church spire bears 308°M and Heron Point Light bears 206°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 1615 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 041°M and Heron Point Light bears 273°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 Kittle water tank to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Kittle water tank: ________ °T Distance: ________ nm
At 0915 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 267°M and Kittle water tank 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 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 1550 you take two bearings with a hand-bearing compass: Heron Point Light bears 203°M and Gannet Rock daybeacon bears 127°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 0710 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 093°M and Mill stack bears 164°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 1715 you take two bearings with a hand-bearing compass: Mill stack bears 221°M and Westfield church spire bears 297°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 0730 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 074°M and Westfield church spire bears 310°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 1350 you take two bearings with a hand-bearing compass: Mill stack bears 151°M and Heron Point Light bears 259°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 Green can "1": 292 °T Distance: 1.25 nm | No. 707001 (worked solution) |
| 2 | Bearing from Kittle water tank: 300 °T Distance: 2.84 nm | No. 707002 (worked solution) |
| 3 | Bearing from Bell buoy "HS": 177 °T Distance: 3.39 nm | No. 707003 (worked solution) |
| 4 | Bearing from Green can "3": 317 °T Distance: 3.23 nm | No. 707004 (worked solution) |
| 5 | Bearing from Green can "3": 231 °T Distance: 1.97 nm | No. 707005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 238 °T Distance: 2.27 nm | No. 707006 (worked solution) |
| 7 | Bearing from Green can "1": 135 °T Distance: 1.69 nm | No. 707007 (worked solution) |
| 8 | Bearing from Red nun "2": 199 °T Distance: 1.46 nm | No. 707008 (worked solution) |