Worksheet 631 · Skill 4
Two-bearing fix
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At 0735 you take two bearings with a hand-bearing compass: Kittle water tank bears 185°M and Gannet Rock daybeacon bears 305°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 1625 you take two bearings with a hand-bearing compass: Kittle water tank bears 150°M and Mill stack bears 207°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 1520 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Westfield church spire bears 248°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 0905 you take two bearings with a hand-bearing compass: Westfield church spire bears 279°M and Kittle water tank bears 152°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 0755 you take two bearings with a hand-bearing compass: Kittle water tank bears 143°M and Westfield church spire bears 263°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 1100 you take two bearings with a hand-bearing compass: Kittle water tank bears 165°M and Heron Point Light bears 252°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 Gannet Rock daybeacon to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Gannet Rock daybeacon: ________ °T Distance: ________ nm
At 0820 you take two bearings with a hand-bearing compass: Heron Point Light bears 203°M and Westfield church spire bears 290°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 1050 you take two bearings with a hand-bearing compass: Westfield church spire bears 285°M and Mill stack bears 169°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: 4.47 nm | No. 631001 (worked solution) |
| 2 | Bearing from Tern Island tower: 180 °T Distance: 1.25 nm | No. 631002 (worked solution) |
| 3 | Bearing from Tern Island tower: 300 °T Distance: 3.01 nm | No. 631003 (worked solution) |
| 4 | Bearing from Tern Island tower: 167 °T Distance: 1.40 nm | No. 631004 (worked solution) |
| 5 | Bearing from Green can "3": 342 °T Distance: 1.84 nm | No. 631005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 346 °T Distance: 1.25 nm | No. 631006 (worked solution) |
| 7 | Bearing from Green can "1": 324 °T Distance: 1.70 nm | No. 631007 (worked solution) |
| 8 | Bearing from Red nun "2": 342 °T Distance: 0.88 nm | No. 631008 (worked solution) |