Worksheet 307 · Skill 4
Two-bearing fix
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At 1215 you take two bearings with a hand-bearing compass: Kittle water tank bears 150°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
At 0825 you take two bearings with a hand-bearing compass: Kittle water tank bears 188°M and Gannet Rock daybeacon bears 289°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 Bell buoy "HS" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Bell buoy "HS": ________ °T Distance: ________ nm
At 1125 you take two bearings with a hand-bearing compass: Mill stack bears 150°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 "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 0900 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Westfield church spire bears 264°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 1205 you take two bearings with a hand-bearing compass: Kittle water tank bears 158°M and Mill stack bears 226°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 1130 you take two bearings with a hand-bearing compass: Mill stack bears 159°M and Gannet Rock daybeacon bears 105°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 0935 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 241°M and Kittle water tank bears 191°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 Bell buoy "HS" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Bell buoy "HS": ________ °T Distance: ________ nm
At 1500 you take two bearings with a hand-bearing compass: Westfield church spire bears 267°M and Heron Point Light bears 215°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Gannet Rock daybeacon: 299 °T Distance: 1.67 nm | No. 307001 (worked solution) |
| 2 | Bearing from Bell buoy "HS": 190 °T Distance: 4.18 nm | No. 307002 (worked solution) |
| 3 | Bearing from Green can "1": 316 °T Distance: 3.73 nm | No. 307003 (worked solution) |
| 4 | Bearing from Green can "3": 335 °T Distance: 1.79 nm | No. 307004 (worked solution) |
| 5 | Bearing from Tern Island tower: 148 °T Distance: 2.65 nm | No. 307005 (worked solution) |
| 6 | Bearing from Red nun "2": 305 °T Distance: 1.48 nm | No. 307006 (worked solution) |
| 7 | Bearing from Bell buoy "HS": 191 °T Distance: 2.62 nm | No. 307007 (worked solution) |
| 8 | Bearing from Green can "3": 309 °T Distance: 1.94 nm | No. 307008 (worked solution) |