Worksheet 744 · Skill 4
Two-bearing fix
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At 1605 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Heron Point Light bears 233°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 1130 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 079°M and Mill stack 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 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 0815 you take two bearings with a hand-bearing compass: Mill stack bears 190°M and Westfield church spire bears 258°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 1410 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Westfield church spire bears 246°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 1225 you take two bearings with a hand-bearing compass: Westfield church spire bears 237°M and Mill stack bears 167°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 1400 you take two bearings with a hand-bearing compass: Heron Point Light bears 225°M and Gannet Rock daybeacon bears 097°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 1700 you take two bearings with a hand-bearing compass: Westfield church spire bears 257°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
At 1100 you take two bearings with a hand-bearing compass: Heron Point Light bears 250°M and Gannet Rock daybeacon bears 132°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 Red nun "2": 035 °T Distance: 1.22 nm | No. 744001 (worked solution) |
| 2 | Bearing from Green can "3": 167 °T Distance: 1.95 nm | No. 744002 (worked solution) |
| 3 | Bearing from Tern Island tower: 303 °T Distance: 1.70 nm | No. 744003 (worked solution) |
| 4 | Bearing from Tern Island tower: 303 °T Distance: 3.14 nm | No. 744004 (worked solution) |
| 5 | Bearing from Green can "3": 315 °T Distance: 4.00 nm | No. 744005 (worked solution) |
| 6 | Bearing from Red nun "2": 270 °T Distance: 0.84 nm | No. 744006 (worked solution) |
| 7 | Bearing from Red nun "2": 319 °T Distance: 2.99 nm | No. 744007 (worked solution) |
| 8 | Bearing from Tern Island tower: 165 °T Distance: 1.59 nm | No. 744008 (worked solution) |