Worksheet 89 · Skill 4
Two-bearing fix
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At 0835 you take two bearings with a hand-bearing compass: Heron Point Light bears 207°M and Mill stack bears 153°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 1710 you take two bearings with a hand-bearing compass: Heron Point Light bears 198°M and Westfield church spire 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 1150 you take two bearings with a hand-bearing compass: Heron Point Light bears 260°M and Mill stack 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 "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 0940 you take two bearings with a hand-bearing compass: Westfield church spire bears 236°M and Gannet Rock daybeacon bears 133°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 0855 you take two bearings with a hand-bearing compass: Heron Point Light bears 275°M and Kittle water tank bears 155°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 1205 you take two bearings with a hand-bearing compass: Westfield church spire bears 278°M and Mill stack 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 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 1000 you take two bearings with a hand-bearing compass: Heron Point Light bears 245°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 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 1305 you take two bearings with a hand-bearing compass: Mill stack bears 162°M and Westfield church spire bears 269°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 "1": 316 °T Distance: 1.35 nm | No. 89001 (worked solution) |
| 2 | Bearing from Red nun "2": 334 °T Distance: 3.26 nm | No. 89002 (worked solution) |
| 3 | Bearing from Green can "3": 144 °T Distance: 1.79 nm | No. 89003 (worked solution) |
| 4 | Bearing from Green can "3": 325 °T Distance: 4.07 nm | No. 89004 (worked solution) |
| 5 | Bearing from Gannet Rock daybeacon: 161 °T Distance: 1.83 nm | No. 89005 (worked solution) |
| 6 | Bearing from Tern Island tower: 175 °T Distance: 1.23 nm | No. 89006 (worked solution) |
| 7 | Bearing from Red nun "2": 071 °T Distance: 1.82 nm | No. 89007 (worked solution) |
| 8 | Bearing from Red nun "2": 323 °T Distance: 2.27 nm | No. 89008 (worked solution) |