Worksheet 411 · Skill 4
Two-bearing fix
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At 0815 you take two bearings with a hand-bearing compass: Mill stack bears 201°M and Gannet Rock daybeacon bears 085°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 1350 you take two bearings with a hand-bearing compass: Mill stack bears 168°M and Gannet Rock daybeacon bears 070°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 0720 you take two bearings with a hand-bearing compass: Westfield church spire bears 266°M and Heron Point Light bears 216°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 1440 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 123°M and Heron Point Light bears 196°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 Westfield church spire to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Westfield church spire: ________ °T Distance: ________ nm
At 1200 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 112°M and Mill stack bears 184°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 1505 you take two bearings with a hand-bearing compass: Westfield church spire bears 285°M and Mill stack bears 212°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 1515 you take two bearings with a hand-bearing compass: Kittle water tank bears 142°M and Heron Point Light bears 241°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 1405 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 140°M and Heron Point Light bears 247°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 156 °T Distance: 1.64 nm | No. 411001 (worked solution) |
| 2 | Bearing from Green can "1": 140 °T Distance: 1.96 nm | No. 411002 (worked solution) |
| 3 | Bearing from Green can "3": 314 °T Distance: 1.90 nm | No. 411003 (worked solution) |
| 4 | Bearing from Westfield church spire: 058 °T Distance: 3.21 nm | No. 411004 (worked solution) |
| 5 | Bearing from Red nun "2": 043 °T Distance: 1.40 nm | No. 411005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 282 °T Distance: 1.74 nm | No. 411006 (worked solution) |
| 7 | Bearing from Tern Island tower: 217 °T Distance: 1.64 nm | No. 411007 (worked solution) |
| 8 | Bearing from Tern Island tower: 162 °T Distance: 1.23 nm | No. 411008 (worked solution) |