Worksheet 48 · Skill 4
Two-bearing fix
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At 1020 you take two bearings with a hand-bearing compass: Kittle water tank bears 150°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 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 0805 you take two bearings with a hand-bearing compass: Mill stack bears 157°M and Westfield church spire bears 258°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 1330 you take two bearings with a hand-bearing compass: Kittle water tank bears 201°M and Gannet Rock daybeacon bears 258°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 1010 you take two bearings with a hand-bearing compass: Heron Point Light bears 208°M and Gannet Rock daybeacon bears 120°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 1745 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 306°M and Kittle water tank bears 211°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 1625 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 093°M and Mill stack bears 165°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 1135 you take two bearings with a hand-bearing compass: Mill stack bears 195°M and Heron Point Light bears 264°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 1730 you take two bearings with a hand-bearing compass: Heron Point Light bears 278°M and Gannet Rock daybeacon bears 355°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 169 °T Distance: 1.70 nm | No. 48001 (worked solution) |
| 2 | Bearing from Red nun "2": 315 °T Distance: 3.04 nm | No. 48002 (worked solution) |
| 3 | Bearing from Bell buoy "HS": 177 °T Distance: 2.99 nm | No. 48003 (worked solution) |
| 4 | Bearing from Red nun "2": 343 °T Distance: 2.46 nm | No. 48004 (worked solution) |
| 5 | Bearing from Bell buoy "HS": 180 °T Distance: 5.02 nm | No. 48005 (worked solution) |
| 6 | Bearing from Green can "3": 229 °T Distance: 1.92 nm | No. 48006 (worked solution) |
| 7 | Bearing from Red nun "2": 125 °T Distance: 1.91 nm | No. 48007 (worked solution) |
| 8 | Bearing from Kittle water tank: 312 °T Distance: 1.28 nm | No. 48008 (worked solution) |