Worksheet 792 · Skill 4
Two-bearing fix
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At 1200 you take two bearings with a hand-bearing compass: Kittle water tank bears 147°M and Heron Point Light bears 229°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 0750 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 105°M and Mill stack bears 189°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 0800 you take two bearings with a hand-bearing compass: Westfield church spire bears 290°M and Mill stack bears 195°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: Gannet Rock daybeacon bears 118°M and Westfield church spire 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 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 1255 you take two bearings with a hand-bearing compass: Westfield church spire bears 311°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 Mill stack to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Mill stack: ________ °T Distance: ________ nm
At 0720 you take two bearings with a hand-bearing compass: Westfield church spire bears 276°M and Mill stack bears 187°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 1325 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 092°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 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 1020 you take two bearings with a hand-bearing compass: Mill stack bears 168°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 268 °T Distance: 1.38 nm | No. 792001 (worked solution) |
| 2 | Bearing from Red nun "2": 070 °T Distance: 1.43 nm | No. 792002 (worked solution) |
| 3 | Bearing from Green can "3": 155 °T Distance: 0.98 nm | No. 792003 (worked solution) |
| 4 | Bearing from Red nun "2": 319 °T Distance: 3.67 nm | No. 792004 (worked solution) |
| 5 | Bearing from Mill stack: 346 °T Distance: 1.71 nm | No. 792005 (worked solution) |
| 6 | Bearing from Red nun "2": 039 °T Distance: 1.92 nm | No. 792006 (worked solution) |
| 7 | Bearing from Red nun "2": 242 °T Distance: 1.08 nm | No. 792007 (worked solution) |
| 8 | Bearing from Green can "1": 019 °T Distance: 1.12 nm | No. 792008 (worked solution) |