Worksheet 263 · Skill 4
Two-bearing fix
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At 0740 you take two bearings with a hand-bearing compass: Westfield church spire bears 252°M and Mill stack bears 181°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 0725 you take two bearings with a hand-bearing compass: Mill stack bears 191°M and Westfield church spire bears 256°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 1035 you take two bearings with a hand-bearing compass: Westfield church spire bears 284°M and Mill stack bears 208°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 1705 you take two bearings with a hand-bearing compass: Heron Point Light bears 218°M and Gannet Rock daybeacon bears 095°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 1210 you take two bearings with a hand-bearing compass: Mill stack bears 183°M and Westfield church spire bears 305°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: Westfield church spire bears 229°M and Gannet Rock daybeacon bears 130°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 1115 you take two bearings with a hand-bearing compass: Mill stack bears 148°M and Westfield church spire bears 275°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 1040 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 126°M and Mill stack bears 177°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 Tern Island tower: 293 °T Distance: 2.80 nm | No. 263001 (worked solution) |
| 2 | Bearing from Tern Island tower: 313 °T Distance: 1.76 nm | No. 263002 (worked solution) |
| 3 | Bearing from Green can "3": 104 °T Distance: 1.57 nm | No. 263003 (worked solution) |
| 4 | Bearing from Green can "1": 298 °T Distance: 0.82 nm | No. 263004 (worked solution) |
| 5 | Bearing from Red nun "2": 144 °T Distance: 1.78 nm | No. 263005 (worked solution) |
| 6 | Bearing from Green can "3": 318 °T Distance: 4.52 nm | No. 263006 (worked solution) |
| 7 | Bearing from Green can "1": 311 °T Distance: 3.13 nm | No. 263007 (worked solution) |
| 8 | Bearing from Green can "3": 325 °T Distance: 2.10 nm | No. 263008 (worked solution) |