Worksheet 710 · Skill 4
Two-bearing fix
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At 1240 you take two bearings with a hand-bearing compass: Westfield church spire bears 329°M and Gannet Rock daybeacon bears 088°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 0950 you take two bearings with a hand-bearing compass: Heron Point Light bears 182°M and Westfield church spire bears 304°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 0715 you take two bearings with a hand-bearing compass: Heron Point Light bears 184°M and Westfield church spire bears 276°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 0840 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 128°M and Westfield church spire bears 257°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 0835 you take two bearings with a hand-bearing compass: Mill stack bears 185°M and Gannet Rock daybeacon bears 071°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 1030 you take two bearings with a hand-bearing compass: Heron Point Light bears 229°M and Westfield church spire bears 290°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 0840 you take two bearings with a hand-bearing compass: Mill stack bears 196°M and Gannet Rock daybeacon bears 093°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 0700 you take two bearings with a hand-bearing compass: Kittle water tank bears 147°M and Heron Point Light bears 261°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Heron Point Light: 005 °T Distance: 0.87 nm | No. 710001 (worked solution) |
| 2 | Bearing from Green can "1": 300 °T Distance: 2.32 nm | No. 710002 (worked solution) |
| 3 | Bearing from Green can "1": 316 °T Distance: 2.84 nm | No. 710003 (worked solution) |
| 4 | Bearing from Green can "3": 326 °T Distance: 2.46 nm | No. 710004 (worked solution) |
| 5 | Bearing from Green can "1": 124 °T Distance: 2.10 nm | No. 710005 (worked solution) |
| 6 | Bearing from Green can "1": 021 °T Distance: 1.13 nm | No. 710006 (worked solution) |
| 7 | Bearing from Green can "3": 158 °T Distance: 1.20 nm | No. 710007 (worked solution) |
| 8 | Bearing from Gannet Rock daybeacon: 258 °T Distance: 0.97 nm | No. 710008 (worked solution) |