Worksheet 479 · Skill 4
Two-bearing fix
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At 1305 you take two bearings with a hand-bearing compass: Heron Point Light bears 198°M and Gannet Rock daybeacon bears 122°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 1255 you take two bearings with a hand-bearing compass: Heron Point Light bears 219°M and Gannet Rock daybeacon bears 101°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 101°M and Mill stack bears 162°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 1230 you take two bearings with a hand-bearing compass: Mill stack bears 189°M and Gannet Rock daybeacon bears 131°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 0805 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 116°M and Mill stack bears 179°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 0920 you take two bearings with a hand-bearing compass: Westfield church spire bears 286°M and Heron Point Light 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 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 1230 you take two bearings with a hand-bearing compass: Westfield church spire bears 326°M and Gannet Rock daybeacon bears 084°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 1305 you take two bearings with a hand-bearing compass: Westfield church spire bears 254°M and Heron Point Light bears 178°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 Westfield church spire: 062 °T Distance: 3.23 nm | No. 479001 (worked solution) |
| 2 | Bearing from Red nun "2": 294 °T Distance: 0.99 nm | No. 479002 (worked solution) |
| 3 | Bearing from Red nun "2": 299 °T Distance: 0.80 nm | No. 479003 (worked solution) |
| 4 | Bearing from Green can "3": 004 °T Distance: 1.39 nm | No. 479004 (worked solution) |
| 5 | Bearing from Green can "3": 305 °T Distance: 1.02 nm | No. 479005 (worked solution) |
| 6 | Bearing from Green can "1": 309 °T Distance: 2.76 nm | No. 479006 (worked solution) |
| 7 | Bearing from Green can "1": 232 °T Distance: 1.48 nm | No. 479007 (worked solution) |
| 8 | Bearing from Green can "1": 316 °T Distance: 3.51 nm | No. 479008 (worked solution) |