Worksheet 4 · Skill 4
Two-bearing fix
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At 0910 you take two bearings with a hand-bearing compass: Kittle water tank bears 149°M and Heron Point Light bears 248°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 1725 you take two bearings with a hand-bearing compass: Mill stack bears 219°M and Kittle water tank bears 165°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 0935 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 123°M and Heron Point Light bears 224°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 1430 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 107°M and Mill stack bears 169°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 1350 you take two bearings with a hand-bearing compass: Heron Point Light bears 278°M and Gannet Rock daybeacon bears 353°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 0930 you take two bearings with a hand-bearing compass: Westfield church spire bears 268°M and Mill stack bears 183°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 0720 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 252°M and Kittle water tank bears 199°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 Bell buoy "HS" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Bell buoy "HS": ________ °T Distance: ________ nm
At 0910 you take two bearings with a hand-bearing compass: Heron Point Light bears 216°M and Gannet Rock daybeacon bears 121°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 178 °T Distance: 1.48 nm | No. 4001 (worked solution) |
| 2 | Bearing from Gannet Rock daybeacon: 345 °T Distance: 1.49 nm | No. 4002 (worked solution) |
| 3 | Bearing from Green can "3": 330 °T Distance: 1.31 nm | No. 4003 (worked solution) |
| 4 | Bearing from Red nun "2": 342 °T Distance: 0.95 nm | No. 4004 (worked solution) |
| 5 | Bearing from Kittle water tank: 315 °T Distance: 1.23 nm | No. 4005 (worked solution) |
| 6 | Bearing from Green can "3": 339 °T Distance: 1.40 nm | No. 4006 (worked solution) |
| 7 | Bearing from Bell buoy "HS": 179 °T Distance: 2.75 nm | No. 4007 (worked solution) |
| 8 | Bearing from Green can "3": 313 °T Distance: 1.88 nm | No. 4008 (worked solution) |