Worksheet 221 · Skill 4
Two-bearing fix
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At 1520 you take two bearings with a hand-bearing compass: Heron Point Light bears 187°M and Gannet Rock daybeacon bears 118°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 0755 you take two bearings with a hand-bearing compass: Mill stack bears 212°M and Westfield church spire bears 288°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 0845 you take two bearings with a hand-bearing compass: Mill stack bears 188°M and Heron Point Light bears 244°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 1235 you take two bearings with a hand-bearing compass: Kittle water tank bears 167°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 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 0715 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Westfield church spire bears 251°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 1005 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 076°M and Mill stack bears 197°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 1540 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 098°M and Heron Point Light 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 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 0850 you take two bearings with a hand-bearing compass: Westfield church spire bears 268°M and Mill stack bears 159°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Westfield church spire: 054 °T Distance: 2.34 nm | No. 221001 (worked solution) |
| 2 | Bearing from Green can "3": 119 °T Distance: 1.86 nm | No. 221002 (worked solution) |
| 3 | Bearing from Red nun "2": 073 °T Distance: 1.33 nm | No. 221003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 350 °T Distance: 1.64 nm | No. 221004 (worked solution) |
| 5 | Bearing from Tern Island tower: 295 °T Distance: 2.84 nm | No. 221005 (worked solution) |
| 6 | Bearing from Red nun "2": 127 °T Distance: 2.04 nm | No. 221006 (worked solution) |
| 7 | Bearing from Green can "1": 298 °T Distance: 1.53 nm | No. 221007 (worked solution) |
| 8 | Bearing from Red nun "2": 316 °T Distance: 2.50 nm | No. 221008 (worked solution) |