Worksheet 780 · Skill 4
Two-bearing fix
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At 0905 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 106°M and Heron Point Light bears 208°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 0915 you take two bearings with a hand-bearing compass: Westfield church spire bears 283°M and Mill stack bears 205°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 0910 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 096°M and Mill stack bears 176°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 1510 you take two bearings with a hand-bearing compass: Mill stack bears 172°M and Gannet Rock daybeacon bears 121°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 1310 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 124°M and Heron Point Light bears 222°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 0700 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 095°M and Heron Point Light 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 "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 0825 you take two bearings with a hand-bearing compass: Westfield church spire bears 249°M and Mill stack bears 181°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 1010 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 079°M and Westfield church spire bears 320°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 Red nun "2": 307 °T Distance: 1.59 nm | No. 780001 (worked solution) |
| 2 | Bearing from Green can "3": 100 °T Distance: 1.34 nm | No. 780002 (worked solution) |
| 3 | Bearing from Green can "1": 064 °T Distance: 1.21 nm | No. 780003 (worked solution) |
| 4 | Bearing from Green can "3": 310 °T Distance: 2.23 nm | No. 780004 (worked solution) |
| 5 | Bearing from Green can "3": 329 °T Distance: 1.49 nm | No. 780005 (worked solution) |
| 6 | Bearing from Green can "1": 283 °T Distance: 1.59 nm | No. 780006 (worked solution) |
| 7 | Bearing from Tern Island tower: 298 °T Distance: 2.95 nm | No. 780007 (worked solution) |
| 8 | Bearing from Green can "1": 191 °T Distance: 1.25 nm | No. 780008 (worked solution) |