Worksheet 734 · Skill 4
Two-bearing fix
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At 1645 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 134°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 0835 you take two bearings with a hand-bearing compass: Heron Point Light bears 248°M and Kittle water tank 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 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 1535 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 279°M and Kittle water tank 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 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 1335 you take two bearings with a hand-bearing compass: Heron Point Light bears 234°M and Gannet Rock daybeacon bears 106°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 0900 you take two bearings with a hand-bearing compass: Heron Point Light bears 214°M and Gannet Rock daybeacon bears 118°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 1045 you take two bearings with a hand-bearing compass: Mill stack bears 167°M and Westfield church spire 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 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 0830 you take two bearings with a hand-bearing compass: Westfield church spire bears 251°M and Mill stack bears 165°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 1545 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 275°M and Kittle water tank bears 210°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 178 °T Distance: 1.17 nm | No. 734001 (worked solution) |
| 2 | Bearing from Tern Island tower: 160 °T Distance: 1.34 nm | No. 734002 (worked solution) |
| 3 | Bearing from Bell buoy "HS": 172 °T Distance: 3.94 nm | No. 734003 (worked solution) |
| 4 | Bearing from Red nun "2": 035 °T Distance: 0.84 nm | No. 734004 (worked solution) |
| 5 | Bearing from Green can "3": 303 °T Distance: 1.99 nm | No. 734005 (worked solution) |
| 6 | Bearing from Green can "1": 012 °T Distance: 1.19 nm | No. 734006 (worked solution) |
| 7 | Bearing from Red nun "2": 333 °T Distance: 3.14 nm | No. 734007 (worked solution) |
| 8 | Bearing from Bell buoy "HS": 172 °T Distance: 3.74 nm | No. 734008 (worked solution) |