Worksheet 929 · Skill 4
Two-bearing fix
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At 0915 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Westfield church spire bears 304°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 0805 you take two bearings with a hand-bearing compass: Kittle water tank bears 204°M and Gannet Rock daybeacon bears 293°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 1015 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 121°M and Heron Point Light bears 190°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 1745 you take two bearings with a hand-bearing compass: Mill stack bears 175°M and Gannet Rock daybeacon bears 117°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 1350 you take two bearings with a hand-bearing compass: Westfield church spire bears 253°M and Mill stack 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 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 1455 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 132°M and Heron Point Light bears 230°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 0725 you take two bearings with a hand-bearing compass: Westfield church spire bears 299°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 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 1120 you take two bearings with a hand-bearing compass: Heron Point Light bears 216°M and Gannet Rock daybeacon bears 092°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 Red nun "2": 143 °T Distance: 1.58 nm | No. 929001 (worked solution) |
| 2 | Bearing from Bell buoy "HS": 181 °T Distance: 4.41 nm | No. 929002 (worked solution) |
| 3 | Bearing from Westfield church spire: 052 °T Distance: 2.75 nm | No. 929003 (worked solution) |
| 4 | Bearing from Green can "3": 304 °T Distance: 1.50 nm | No. 929004 (worked solution) |
| 5 | Bearing from Tern Island tower: 331 °T Distance: 1.97 nm | No. 929005 (worked solution) |
| 6 | Bearing from Green can "3": 011 °T Distance: 1.39 nm | No. 929006 (worked solution) |
| 7 | Bearing from Green can "1": 301 °T Distance: 3.16 nm | No. 929007 (worked solution) |
| 8 | Bearing from Green can "1": 272 °T Distance: 1.00 nm | No. 929008 (worked solution) |