Worksheet 612 · Skill 4
Two-bearing fix
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At 0745 you take two bearings with a hand-bearing compass: Kittle water tank bears 167°M and Heron Point Light bears 266°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 1120 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 115°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 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 1310 you take two bearings with a hand-bearing compass: Kittle water tank bears 145°M and Heron Point Light bears 247°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 0745 you take two bearings with a hand-bearing compass: Mill stack bears 162°M and Westfield church spire bears 237°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 1555 you take two bearings with a hand-bearing compass: Mill stack bears 163°M and Westfield church spire bears 282°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: Heron Point Light bears 247°M and Gannet Rock daybeacon bears 129°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 1600 you take two bearings with a hand-bearing compass: Westfield church spire bears 299°M and Mill stack bears 179°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 1605 you take two bearings with a hand-bearing compass: Heron Point Light bears 263°M and Mill stack 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 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: 143 °T Distance: 3.78 nm | No. 612001 (worked solution) |
| 2 | Bearing from Red nun "2": 334 °T Distance: 2.07 nm | No. 612002 (worked solution) |
| 3 | Bearing from Green can "3": 089 °T Distance: 1.37 nm | No. 612003 (worked solution) |
| 4 | Bearing from Red nun "2": 328 °T Distance: 3.87 nm | No. 612004 (worked solution) |
| 5 | Bearing from Red nun "2": 320 °T Distance: 1.45 nm | No. 612005 (worked solution) |
| 6 | Bearing from Tern Island tower: 180 °T Distance: 1.38 nm | No. 612006 (worked solution) |
| 7 | Bearing from Red nun "2": 130 °T Distance: 1.01 nm | No. 612007 (worked solution) |
| 8 | Bearing from Green can "1": 177 °T Distance: 0.94 nm | No. 612008 (worked solution) |