Worksheet 615 · Skill 4
Two-bearing fix
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At 1510 you take two bearings with a hand-bearing compass: Westfield church spire bears 259°M and Mill stack bears 186°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 1415 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 190°M and Heron Point Light bears 254°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 1510 you take two bearings with a hand-bearing compass: Mill stack bears 213°M and Westfield church spire bears 304°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 1620 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 316°M and Kittle water tank bears 193°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 1640 you take two bearings with a hand-bearing compass: Westfield church spire bears 304°M and Mill stack bears 212°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 1425 you take two bearings with a hand-bearing compass: Mill stack bears 163°M and Heron Point Light bears 267°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 1005 you take two bearings with a hand-bearing compass: Mill stack bears 150°M and Gannet Rock daybeacon bears 082°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 0945 you take two bearings with a hand-bearing compass: Kittle water tank bears 155°M and Heron Point Light bears 251°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 289 °T Distance: 2.03 nm | No. 615001 (worked solution) |
| 2 | Bearing from Tern Island tower: 127 °T Distance: 2.34 nm | No. 615002 (worked solution) |
| 3 | Bearing from Red nun "2": 132 °T Distance: 2.80 nm | No. 615003 (worked solution) |
| 4 | Bearing from Tern Island tower: 138 °T Distance: 5.07 nm | No. 615004 (worked solution) |
| 5 | Bearing from Red nun "2": 132 °T Distance: 2.77 nm | No. 615005 (worked solution) |
| 6 | Bearing from Green can "1": 138 °T Distance: 1.25 nm | No. 615006 (worked solution) |
| 7 | Bearing from Green can "1": 174 °T Distance: 0.83 nm | No. 615007 (worked solution) |
| 8 | Bearing from Gannet Rock daybeacon: 312 °T Distance: 1.46 nm | No. 615008 (worked solution) |