Worksheet 347 · Skill 4
Two-bearing fix
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At 1000 you take two bearings with a hand-bearing compass: Westfield church spire bears 255°M and Mill stack bears 192°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 1215 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 110°M and Heron Point Light bears 222°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 0725 you take two bearings with a hand-bearing compass: Heron Point Light bears 277°M and Gannet Rock daybeacon bears 001°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 0730 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 129°M and Heron Point Light bears 233°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 1225 you take two bearings with a hand-bearing compass: Heron Point Light bears 277°M and Gannet Rock daybeacon bears 355°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 1335 you take two bearings with a hand-bearing compass: Mill stack bears 227°M and Kittle water tank bears 177°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 0905 you take two bearings with a hand-bearing compass: Heron Point Light bears 233°M and Westfield church spire bears 285°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 0825 you take two bearings with a hand-bearing compass: Kittle water tank bears 158°M and Mill stack bears 217°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 321 °T Distance: 1.80 nm | No. 347001 (worked solution) |
| 2 | Bearing from Red nun "2": 351 °T Distance: 1.17 nm | No. 347002 (worked solution) |
| 3 | Bearing from Kittle water tank: 310 °T Distance: 1.55 nm | No. 347003 (worked solution) |
| 4 | Bearing from Green can "3": 020 °T Distance: 1.11 nm | No. 347004 (worked solution) |
| 5 | Bearing from Kittle water tank: 316 °T Distance: 1.40 nm | No. 347005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 025 °T Distance: 1.49 nm | No. 347006 (worked solution) |
| 7 | Bearing from Red nun "2": 030 °T Distance: 0.85 nm | No. 347007 (worked solution) |
| 8 | Bearing from Gannet Rock daybeacon: 321 °T Distance: 1.36 nm | No. 347008 (worked solution) |