Worksheet 247 · Skill 4
Two-bearing fix
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At 1000 you take two bearings with a hand-bearing compass: Kittle water tank bears 199°M and Gannet Rock daybeacon bears 292°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
At 1635 you take two bearings with a hand-bearing compass: Mill stack bears 198°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 1055 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 135°M and Westfield church spire bears 234°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 1015 you take two bearings with a hand-bearing compass: Heron Point Light bears 201°M and Westfield church spire bears 316°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 0800 you take two bearings with a hand-bearing compass: Mill stack bears 171°M and Heron Point Light bears 223°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 1555 you take two bearings with a hand-bearing compass: Heron Point Light bears 249°M and Gannet Rock daybeacon bears 168°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 1115 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 133°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 1235 you take two bearings with a hand-bearing compass: Heron Point Light bears 228°M and Gannet Rock daybeacon bears 134°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 Bell buoy "HS": 184 °T Distance: 4.33 nm | No. 247001 (worked solution) |
| 2 | Bearing from Green can "3": 138 °T Distance: 0.97 nm | No. 247002 (worked solution) |
| 3 | Bearing from Green can "3": 328 °T Distance: 4.26 nm | No. 247003 (worked solution) |
| 4 | Bearing from Green can "1": 276 °T Distance: 1.42 nm | No. 247004 (worked solution) |
| 5 | Bearing from Red nun "2": 351 °T Distance: 1.08 nm | No. 247005 (worked solution) |
| 6 | Bearing from Tern Island tower: 127 °T Distance: 1.59 nm | No. 247006 (worked solution) |
| 7 | Bearing from Westfield church spire: 043 °T Distance: 4.25 nm | No. 247007 (worked solution) |
| 8 | Bearing from Tern Island tower: 269 °T Distance: 1.50 nm | No. 247008 (worked solution) |