Worksheet 677 · Skill 4
Two-bearing fix
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At 1125 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 274°M and Kittle water tank bears 182°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 0840 you take two bearings with a hand-bearing compass: Mill stack bears 190°M and Gannet Rock daybeacon bears 072°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 0835 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 279°M and Kittle water tank bears 184°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 0820 you take two bearings with a hand-bearing compass: Mill stack bears 211°M and Heron Point Light 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 1755 you take two bearings with a hand-bearing compass: Heron Point Light bears 269°M and Westfield church spire bears 323°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 1645 you take two bearings with a hand-bearing compass: Heron Point Light bears 222°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 1530 you take two bearings with a hand-bearing compass: Heron Point Light bears 269°M and Gannet Rock daybeacon bears 033°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 0735 you take two bearings with a hand-bearing compass: Westfield church spire bears 239°M and Mill stack bears 159°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 Tern Island tower: 130 °T Distance: 3.82 nm | No. 677001 (worked solution) |
| 2 | Bearing from Red nun "2": 141 °T Distance: 2.09 nm | No. 677002 (worked solution) |
| 3 | Bearing from Bell buoy "HS": 194 °T Distance: 3.96 nm | No. 677003 (worked solution) |
| 4 | Bearing from Green can "3": 139 °T Distance: 1.96 nm | No. 677004 (worked solution) |
| 5 | Bearing from Green can "1": 205 °T Distance: 1.36 nm | No. 677005 (worked solution) |
| 6 | Bearing from Red nun "2": 259 °T Distance: 1.17 nm | No. 677006 (worked solution) |
| 7 | Bearing from Kittle water tank: 315 °T Distance: 2.73 nm | No. 677007 (worked solution) |
| 8 | Bearing from Red nun "2": 322 °T Distance: 3.75 nm | No. 677008 (worked solution) |