Worksheet 905 · Skill 4
Two-bearing fix
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At 1620 you take two bearings with a hand-bearing compass: Heron Point Light bears 246°M and Mill stack bears 161°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 0830 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 117°M and Heron Point Light 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 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 1000 you take two bearings with a hand-bearing compass: Heron Point Light bears 227°M and Westfield church spire bears 311°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 0925 you take two bearings with a hand-bearing compass: Heron Point Light bears 181°M and Westfield church spire bears 284°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 1250 you take two bearings with a hand-bearing compass: Mill stack bears 175°M and Gannet Rock daybeacon bears 105°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 1645 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 111°M and Heron Point Light 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 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 0855 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 125°M and Westfield church spire bears 255°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 1055 you take two bearings with a hand-bearing compass: Heron Point Light bears 224°M and Gannet Rock daybeacon bears 126°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 Green can "3": 224 °T Distance: 2.24 nm | No. 905001 (worked solution) |
| 2 | Bearing from Westfield church spire: 049 °T Distance: 2.06 nm | No. 905002 (worked solution) |
| 3 | Bearing from Red nun "2": 243 °T Distance: 1.42 nm | No. 905003 (worked solution) |
| 4 | Bearing from Green can "1": 310 °T Distance: 2.80 nm | No. 905004 (worked solution) |
| 5 | Bearing from Green can "3": 255 °T Distance: 1.06 nm | No. 905005 (worked solution) |
| 6 | Bearing from Red nun "2": 330 °T Distance: 1.62 nm | No. 905006 (worked solution) |
| 7 | Bearing from Green can "3": 316 °T Distance: 2.77 nm | No. 905007 (worked solution) |
| 8 | Bearing from Green can "3": 339 °T Distance: 1.42 nm | No. 905008 (worked solution) |