Worksheet 436 · Skill 4
Two-bearing fix
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At 1535 you take two bearings with a hand-bearing compass: Mill stack bears 221°M and Gannet Rock daybeacon bears 148°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 1025 you take two bearings with a hand-bearing compass: Westfield church spire bears 278°M and Mill stack bears 193°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 1520 you take two bearings with a hand-bearing compass: Heron Point Light bears 254°M and Kittle water tank bears 157°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 1645 you take two bearings with a hand-bearing compass: Heron Point Light bears 272°M and Mill stack bears 195°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 1640 you take two bearings with a hand-bearing compass: Westfield church spire bears 247°M and Mill stack bears 169°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 1300 you take two bearings with a hand-bearing compass: Kittle water tank bears 163°M and Mill stack bears 220°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 1200 you take two bearings with a hand-bearing compass: Heron Point Light bears 220°M and Westfield church spire bears 277°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 1300 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 093°M and Mill stack bears 147°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 146 °T Distance: 2.13 nm | No. 436001 (worked solution) |
| 2 | Bearing from Tern Island tower: 227 °T Distance: 1.75 nm | No. 436002 (worked solution) |
| 3 | Bearing from Gannet Rock daybeacon: 314 °T Distance: 1.05 nm | No. 436003 (worked solution) |
| 4 | Bearing from Red nun "2": 138 °T Distance: 2.23 nm | No. 436004 (worked solution) |
| 5 | Bearing from Green can "3": 315 °T Distance: 3.35 nm | No. 436005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 339 °T Distance: 1.24 nm | No. 436006 (worked solution) |
| 7 | Bearing from Red nun "2": 352 °T Distance: 1.41 nm | No. 436007 (worked solution) |
| 8 | Bearing from Green can "1": 280 °T Distance: 0.95 nm | No. 436008 (worked solution) |