Worksheet 563 · Skill 4
Two-bearing fix
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At 1030 you take two bearings with a hand-bearing compass: Westfield church spire bears 281°M and Mill stack bears 194°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 1125 you take two bearings with a hand-bearing compass: Mill stack bears 170°M and Gannet Rock daybeacon bears 102°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 1245 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 019°M and Heron Point Light 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 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: Mill stack bears 152°M and Heron Point Light bears 207°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 1550 you take two bearings with a hand-bearing compass: Heron Point Light bears 226°M and Gannet Rock daybeacon bears 108°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 1525 you take two bearings with a hand-bearing compass: Westfield church spire bears 248°M and Mill stack bears 175°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 1530 you take two bearings with a hand-bearing compass: Heron Point Light bears 196°M and Gannet Rock daybeacon bears 134°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 Westfield church spire to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Westfield church spire: ________ °T Distance: ________ nm
At 1325 you take two bearings with a hand-bearing compass: Mill stack bears 185°M and Heron Point Light bears 262°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: 219 °T Distance: 1.96 nm | No. 563001 (worked solution) |
| 2 | Bearing from Green can "1": 028 °T Distance: 1.16 nm | No. 563002 (worked solution) |
| 3 | Bearing from Kittle water tank: 305 °T Distance: 2.16 nm | No. 563003 (worked solution) |
| 4 | Bearing from Green can "1": 312 °T Distance: 1.30 nm | No. 563004 (worked solution) |
| 5 | Bearing from Red nun "2": 359 °T Distance: 0.94 nm | No. 563005 (worked solution) |
| 6 | Bearing from Green can "3": 328 °T Distance: 3.16 nm | No. 563006 (worked solution) |
| 7 | Bearing from Westfield church spire: 042 °T Distance: 4.38 nm | No. 563007 (worked solution) |
| 8 | Bearing from Red nun "2": 134 °T Distance: 1.53 nm | No. 563008 (worked solution) |