Worksheet 597 · Skill 4
Two-bearing fix
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At 1610 you take two bearings with a hand-bearing compass: Mill stack bears 172°M and Gannet Rock daybeacon bears 079°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 1705 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 132°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 "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 1040 you take two bearings with a hand-bearing compass: Westfield church spire bears 283°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 1630 you take two bearings with a hand-bearing compass: Mill stack bears 193°M and Heron Point Light bears 253°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 1655 you take two bearings with a hand-bearing compass: Heron Point Light bears 204°M and Gannet Rock daybeacon bears 131°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 1635 you take two bearings with a hand-bearing compass: Mill stack bears 161°M and Heron Point Light bears 263°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 1205 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 158°M and Mill stack bears 219°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 1750 you take two bearings with a hand-bearing compass: Kittle water tank bears 194°M and Gannet Rock daybeacon bears 291°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "1": 123 °T Distance: 1.41 nm | No. 597001 (worked solution) |
| 2 | Bearing from Green can "3": 321 °T Distance: 4.69 nm | No. 597002 (worked solution) |
| 3 | Bearing from Green can "1": 320 °T Distance: 2.31 nm | No. 597003 (worked solution) |
| 4 | Bearing from Green can "3": 167 °T Distance: 1.17 nm | No. 597004 (worked solution) |
| 5 | Bearing from Green can "3": 325 °T Distance: 3.41 nm | No. 597005 (worked solution) |
| 6 | Bearing from Green can "1": 139 °T Distance: 1.03 nm | No. 597006 (worked solution) |
| 7 | Bearing from Tern Island tower: 140 °T Distance: 1.85 nm | No. 597007 (worked solution) |
| 8 | Bearing from Bell buoy "HS": 187 °T Distance: 4.26 nm | No. 597008 (worked solution) |