Worksheet 372 · Skill 4
Two-bearing fix
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At 0940 you take two bearings with a hand-bearing compass: Mill stack bears 179°M and Westfield church spire bears 247°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 1115 you take two bearings with a hand-bearing compass: Mill stack bears 213°M and Kittle water tank bears 149°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 1305 you take two bearings with a hand-bearing compass: Westfield church spire bears 279°M and Mill stack bears 202°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 1440 you take two bearings with a hand-bearing compass: Kittle water tank bears 158°M and Heron Point Light bears 254°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 1550 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 007°M and Heron Point Light bears 276°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 0735 you take two bearings with a hand-bearing compass: Westfield church spire bears 266°M and Kittle water tank bears 144°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 1505 you take two bearings with a hand-bearing compass: Heron Point Light bears 278°M and Mill stack bears 189°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: Heron Point Light bears 213°M and Westfield church spire bears 267°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: 297 °T Distance: 3.22 nm | No. 372001 (worked solution) |
| 2 | Bearing from Gannet Rock daybeacon: 295 °T Distance: 1.61 nm | No. 372002 (worked solution) |
| 3 | Bearing from Green can "3": 078 °T Distance: 1.23 nm | No. 372003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 318 °T Distance: 1.03 nm | No. 372004 (worked solution) |
| 5 | Bearing from Kittle water tank: 309 °T Distance: 1.80 nm | No. 372005 (worked solution) |
| 6 | Bearing from Green can "3": 353 °T Distance: 1.56 nm | No. 372006 (worked solution) |
| 7 | Bearing from Green can "1": 128 °T Distance: 2.36 nm | No. 372007 (worked solution) |
| 8 | Bearing from Green can "3": 305 °T Distance: 2.08 nm | No. 372008 (worked solution) |