Worksheet 251 · Skill 4
Two-bearing fix
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At 1440 you take two bearings with a hand-bearing compass: Heron Point Light bears 255°M and Mill stack bears 202°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 0805 you take two bearings with a hand-bearing compass: Heron Point Light bears 271°M and Kittle water tank bears 162°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 0730 you take two bearings with a hand-bearing compass: Westfield church spire bears 290°M and Mill stack bears 202°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 1500 you take two bearings with a hand-bearing compass: Heron Point Light bears 175°M and Westfield church spire bears 240°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 0815 you take two bearings with a hand-bearing compass: Mill stack bears 148°M and Westfield church spire bears 227°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 1220 you take two bearings with a hand-bearing compass: Mill stack bears 219°M and Kittle water tank bears 166°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 1345 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 085°M and Mill stack bears 206°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 1530 you take two bearings with a hand-bearing compass: Westfield church spire bears 314°M and Gannet Rock daybeacon bears 073°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 Green can "3": 141 °T Distance: 1.36 nm | No. 251001 (worked solution) |
| 2 | Bearing from Gannet Rock daybeacon: 155 °T Distance: 1.31 nm | No. 251002 (worked solution) |
| 3 | Bearing from Green can "3": 139 °T Distance: 1.32 nm | No. 251003 (worked solution) |
| 4 | Bearing from Green can "1": 316 °T Distance: 3.85 nm | No. 251004 (worked solution) |
| 5 | Bearing from Green can "1": 313 °T Distance: 4.13 nm | No. 251005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 348 °T Distance: 1.56 nm | No. 251006 (worked solution) |
| 7 | Bearing from Green can "3": 145 °T Distance: 1.74 nm | No. 251007 (worked solution) |
| 8 | Bearing from Green can "1": 149 °T Distance: 1.66 nm | No. 251008 (worked solution) |