Worksheet 375 · Skill 4
Two-bearing fix
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At 1120 you take two bearings with a hand-bearing compass: Kittle water tank bears 155°M and Mill stack 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 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 0855 you take two bearings with a hand-bearing compass: Heron Point Light bears 258°M and Westfield church spire bears 315°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 0920 you take two bearings with a hand-bearing compass: Mill stack bears 165°M and Westfield church spire bears 272°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 1330 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 089°M and Heron Point Light bears 213°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 1225 you take two bearings with a hand-bearing compass: Heron Point Light bears 272°M and Gannet Rock daybeacon bears 343°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 Kittle water tank to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Kittle water tank: ________ °T Distance: ________ nm
At 1055 you take two bearings with a hand-bearing compass: Mill stack bears 174°M and Westfield church spire bears 265°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 1305 you take two bearings with a hand-bearing compass: Heron Point Light bears 274°M and Kittle water tank bears 159°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 1115 you take two bearings with a hand-bearing compass: Heron Point Light bears 243°M and Westfield church spire bears 307°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 157 °T Distance: 1.32 nm | No. 375001 (worked solution) |
| 2 | Bearing from Green can "1": 187 °T Distance: 0.82 nm | No. 375002 (worked solution) |
| 3 | Bearing from Red nun "2": 330 °T Distance: 1.95 nm | No. 375003 (worked solution) |
| 4 | Bearing from Green can "1": 255 °T Distance: 1.33 nm | No. 375004 (worked solution) |
| 5 | Bearing from Kittle water tank: 334 °T Distance: 1.87 nm | No. 375005 (worked solution) |
| 6 | Bearing from Green can "3": 313 °T Distance: 2.02 nm | No. 375006 (worked solution) |
| 7 | Bearing from Gannet Rock daybeacon: 158 °T Distance: 1.72 nm | No. 375007 (worked solution) |
| 8 | Bearing from Red nun "2": 216 °T Distance: 0.94 nm | No. 375008 (worked solution) |