Worksheet 880 · Skill 4
Two-bearing fix
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At 1220 you take two bearings with a hand-bearing compass: Kittle water tank bears 192°M and Gannet Rock daybeacon 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 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 0945 you take two bearings with a hand-bearing compass: Mill stack bears 172°M and Westfield church spire bears 266°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 1650 you take two bearings with a hand-bearing compass: Westfield church spire bears 253°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 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 1630 you take two bearings with a hand-bearing compass: Westfield church spire bears 277°M and Mill stack bears 148°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 1135 you take two bearings with a hand-bearing compass: Westfield church spire bears 298°M and Mill stack 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 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 1705 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 125°M and Westfield church spire bears 254°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 1125 you take two bearings with a hand-bearing compass: Westfield church spire bears 277°M and Mill stack 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 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 0900 you take two bearings with a hand-bearing compass: Mill stack bears 184°M and Gannet Rock daybeacon bears 121°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Bell buoy "HS": 189 °T Distance: 3.28 nm | No. 880001 (worked solution) |
| 2 | Bearing from Green can "3": 307 °T Distance: 2.10 nm | No. 880002 (worked solution) |
| 3 | Bearing from Tern Island tower: 296 °T Distance: 2.57 nm | No. 880003 (worked solution) |
| 4 | Bearing from Green can "1": 311 °T Distance: 3.07 nm | No. 880004 (worked solution) |
| 5 | Bearing from Red nun "2": 120 °T Distance: 1.56 nm | No. 880005 (worked solution) |
| 6 | Bearing from Green can "3": 315 °T Distance: 2.85 nm | No. 880006 (worked solution) |
| 7 | Bearing from Red nun "2": 028 °T Distance: 1.59 nm | No. 880007 (worked solution) |
| 8 | Bearing from Green can "3": 335 °T Distance: 0.91 nm | No. 880008 (worked solution) |