Worksheet 339 · Skill 4
Two-bearing fix
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At 1720 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 108°M and Heron Point Light bears 221°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 1030 you take two bearings with a hand-bearing compass: Heron Point Light bears 201°M and Gannet Rock daybeacon bears 096°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 1600 you take two bearings with a hand-bearing compass: Mill stack bears 153°M and Gannet Rock daybeacon bears 081°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 1735 you take two bearings with a hand-bearing compass: Heron Point Light bears 204°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 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 1635 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 314°M and Kittle water tank bears 226°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 1330 you take two bearings with a hand-bearing compass: Heron Point Light bears 205°M and Westfield church spire 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 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 1205 you take two bearings with a hand-bearing compass: Kittle water tank bears 155°M and Mill stack bears 216°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 Gannet Rock daybeacon to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Gannet Rock daybeacon: ________ °T Distance: ________ nm
At 0940 you take two bearings with a hand-bearing compass: Westfield church spire bears 266°M and Mill stack bears 191°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Red nun "2": 340 °T Distance: 1.07 nm | No. 339001 (worked solution) |
| 2 | Bearing from Green can "1": 290 °T Distance: 1.42 nm | No. 339002 (worked solution) |
| 3 | Bearing from Green can "1": 161 °T Distance: 0.91 nm | No. 339003 (worked solution) |
| 4 | Bearing from Red nun "2": 319 °T Distance: 2.01 nm | No. 339004 (worked solution) |
| 5 | Bearing from Bell buoy "HS": 178 °T Distance: 5.59 nm | No. 339005 (worked solution) |
| 6 | Bearing from Red nun "2": 339 °T Distance: 2.66 nm | No. 339006 (worked solution) |
| 7 | Bearing from Gannet Rock daybeacon: 311 °T Distance: 1.39 nm | No. 339007 (worked solution) |
| 8 | Bearing from Tern Island tower: 272 °T Distance: 1.36 nm | No. 339008 (worked solution) |