Worksheet 686 · Skill 4
Two-bearing fix
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At 1735 you take two bearings with a hand-bearing compass: Mill stack bears 149°M and Gannet Rock daybeacon bears 098°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 1550 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 131°M and Westfield church spire bears 245°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 1305 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 352°M and Heron Point Light bears 278°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 Kittle water tank to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Kittle water tank: ________ °T Distance: ________ nm
At 0725 you take two bearings with a hand-bearing compass: Mill stack bears 216°M and Gannet Rock daybeacon bears 130°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 0940 you take two bearings with a hand-bearing compass: Mill stack bears 165°M and Westfield church spire bears 295°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 1420 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 127°M and Mill stack bears 182°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 1330 you take two bearings with a hand-bearing compass: Mill stack bears 197°M and Westfield church spire 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 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 1655 you take two bearings with a hand-bearing compass: Mill stack bears 211°M and Westfield church spire bears 279°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 Green can "1": 301 °T Distance: 1.38 nm | No. 686001 (worked solution) |
| 2 | Bearing from Green can "3": 325 °T Distance: 3.40 nm | No. 686002 (worked solution) |
| 3 | Bearing from Kittle water tank: 316 °T Distance: 1.20 nm | No. 686003 (worked solution) |
| 4 | Bearing from Tern Island tower: 159 °T Distance: 1.88 nm | No. 686004 (worked solution) |
| 5 | Bearing from Green can "3": 244 °T Distance: 1.82 nm | No. 686005 (worked solution) |
| 6 | Bearing from Green can "3": 337 °T Distance: 1.61 nm | No. 686006 (worked solution) |
| 7 | Bearing from Red nun "2": 130 °T Distance: 2.11 nm | No. 686007 (worked solution) |
| 8 | Bearing from Tern Island tower: 166 °T Distance: 1.41 nm | No. 686008 (worked solution) |