Worksheet 578 · Skill 4
Two-bearing fix
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At 1655 you take two bearings with a hand-bearing compass: Kittle water tank bears 179°M and Gannet Rock daybeacon bears 302°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: Westfield church spire bears 270°M and Mill stack bears 154°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 1335 you take two bearings with a hand-bearing compass: Westfield church spire bears 261°M and Mill stack bears 192°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 1600 you take two bearings with a hand-bearing compass: Mill stack bears 196°M and Westfield church spire bears 276°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 1755 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 070°M and Westfield church spire bears 313°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: Mill stack bears 208°M and Westfield church spire bears 282°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 1325 you take two bearings with a hand-bearing compass: Mill stack bears 185°M and Westfield church spire bears 265°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 1010 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 104°M and Mill stack bears 184°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 Tern Island tower: 136 °T Distance: 4.13 nm | No. 578001 (worked solution) |
| 2 | Bearing from Green can "1": 323 °T Distance: 2.80 nm | No. 578002 (worked solution) |
| 3 | Bearing from Tern Island tower: 298 °T Distance: 1.36 nm | No. 578003 (worked solution) |
| 4 | Bearing from Green can "3": 050 °T Distance: 0.95 nm | No. 578004 (worked solution) |
| 5 | Bearing from Mill stack: 338 °T Distance: 1.67 nm | No. 578005 (worked solution) |
| 6 | Bearing from Green can "3": 095 °T Distance: 1.62 nm | No. 578006 (worked solution) |
| 7 | Bearing from Green can "3": 349 °T Distance: 1.65 nm | No. 578007 (worked solution) |
| 8 | Bearing from Red nun "2": 064 °T Distance: 1.09 nm | No. 578008 (worked solution) |