Worksheet 127 · Skill 4
Two-bearing fix
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At 0910 you take two bearings with a hand-bearing compass: Westfield church spire bears 259°M and Mill stack bears 191°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 1015 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 080°M and Westfield church spire bears 324°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 Heron Point Light to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Heron Point Light: ________ °T Distance: ________ nm
At 1140 you take two bearings with a hand-bearing compass: Westfield church spire bears 248°M and Heron Point Light 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 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 1020 you take two bearings with a hand-bearing compass: Mill stack bears 223°M and Kittle water tank bears 160°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 1715 you take two bearings with a hand-bearing compass: Mill stack bears 178°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 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 1425 you take two bearings with a hand-bearing compass: Westfield church spire bears 312°M and Heron Point Light bears 249°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 1405 you take two bearings with a hand-bearing compass: Kittle water tank bears 148°M and Mill stack bears 210°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 1450 you take two bearings with a hand-bearing compass: Mill stack bears 157°M and Heron Point Light bears 208°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: 303 °T Distance: 1.56 nm | No. 127001 (worked solution) |
| 2 | Bearing from Heron Point Light: 083 °T Distance: 1.14 nm | No. 127002 (worked solution) |
| 3 | Bearing from Red nun "2": 325 °T Distance: 3.33 nm | No. 127003 (worked solution) |
| 4 | Bearing from Tern Island tower: 144 °T Distance: 2.30 nm | No. 127004 (worked solution) |
| 5 | Bearing from Green can "3": 258 °T Distance: 0.82 nm | No. 127005 (worked solution) |
| 6 | Bearing from Red nun "2": 213 °T Distance: 1.32 nm | No. 127006 (worked solution) |
| 7 | Bearing from Tern Island tower: 176 °T Distance: 1.69 nm | No. 127007 (worked solution) |
| 8 | Bearing from Green can "1": 330 °T Distance: 1.52 nm | No. 127008 (worked solution) |