Worksheet 610 · Skill 4
Two-bearing fix
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At 1145 you take two bearings with a hand-bearing compass: Mill stack bears 175°M and Westfield church spire bears 245°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 1515 you take two bearings with a hand-bearing compass: Heron Point Light bears 181°M and Gannet Rock daybeacon bears 101°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 1345 you take two bearings with a hand-bearing compass: Westfield church spire bears 256°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 1020 you take two bearings with a hand-bearing compass: Heron Point Light bears 201°M and Westfield church spire bears 251°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 1700 you take two bearings with a hand-bearing compass: Kittle water tank bears 145°M and Heron Point Light bears 245°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 1445 you take two bearings with a hand-bearing compass: Heron Point Light bears 240°M and Westfield church spire bears 293°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 1130 you take two bearings with a hand-bearing compass: Heron Point Light bears 275°M and Mill stack bears 182°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 1600 you take two bearings with a hand-bearing compass: Heron Point Light bears 236°M and Gannet Rock daybeacon bears 114°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 Green can "3": 330 °T Distance: 3.39 nm | No. 610001 (worked solution) |
| 2 | Bearing from Westfield church spire: 118 °T Distance: 1.86 nm | No. 610002 (worked solution) |
| 3 | Bearing from Tern Island tower: 313 °T Distance: 1.76 nm | No. 610003 (worked solution) |
| 4 | Bearing from Red nun "2": 338 °T Distance: 3.15 nm | No. 610004 (worked solution) |
| 5 | Bearing from Green can "3": 082 °T Distance: 1.24 nm | No. 610005 (worked solution) |
| 6 | Bearing from Green can "1": 055 °T Distance: 1.16 nm | No. 610006 (worked solution) |
| 7 | Bearing from Green can "1": 128 °T Distance: 2.08 nm | No. 610007 (worked solution) |
| 8 | Bearing from Red nun "2": 047 °T Distance: 1.62 nm | No. 610008 (worked solution) |