Worksheet 270 · Skill 4
Two-bearing fix
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At 1735 you take two bearings with a hand-bearing compass: Heron Point Light bears 184°M and Gannet Rock daybeacon bears 101°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 1720 you take two bearings with a hand-bearing compass: Westfield church spire bears 314°M and Heron Point Light bears 210°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 1550 you take two bearings with a hand-bearing compass: Heron Point Light bears 275°M and Gannet Rock daybeacon bears 005°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 Kittle water tank to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Kittle water tank: ________ °T Distance: ________ nm
At 1430 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 128°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 1005 you take two bearings with a hand-bearing compass: Mill stack bears 178°M and Westfield church spire bears 295°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 1300 you take two bearings with a hand-bearing compass: Mill stack bears 203°M and Gannet Rock daybeacon bears 090°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 1630 you take two bearings with a hand-bearing compass: Westfield church spire bears 280°M and Kittle water tank bears 150°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 0925 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 119°M and Heron Point Light bears 198°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: 117 °T Distance: 1.98 nm | No. 270001 (worked solution) |
| 2 | Bearing from Green can "1": 274 °T Distance: 1.17 nm | No. 270002 (worked solution) |
| 3 | Bearing from Kittle water tank: 313 °T Distance: 1.83 nm | No. 270003 (worked solution) |
| 4 | Bearing from Westfield church spire: 050 °T Distance: 3.68 nm | No. 270004 (worked solution) |
| 5 | Bearing from Green can "3": 211 °T Distance: 1.29 nm | No. 270005 (worked solution) |
| 6 | Bearing from Green can "3": 145 °T Distance: 1.50 nm | No. 270006 (worked solution) |
| 7 | Bearing from Tern Island tower: 173 °T Distance: 1.50 nm | No. 270007 (worked solution) |
| 8 | Bearing from Red nun "2": 329 °T Distance: 2.97 nm | No. 270008 (worked solution) |