Worksheet 390 · Skill 4
Two-bearing fix
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At 1300 you take two bearings with a hand-bearing compass: Heron Point Light bears 246°M and Mill stack bears 192°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 1155 you take two bearings with a hand-bearing compass: Heron Point Light bears 232°M and Mill stack bears 148°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 0850 you take two bearings with a hand-bearing compass: Kittle water tank bears 160°M and Heron Point Light bears 266°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 1405 you take two bearings with a hand-bearing compass: Heron Point Light bears 275°M and Mill stack bears 214°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 1130 you take two bearings with a hand-bearing compass: Mill stack bears 145°M and Gannet Rock daybeacon bears 088°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 Heron Point Light to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Heron Point Light: ________ °T Distance: ________ nm
At 1700 you take two bearings with a hand-bearing compass: Mill stack bears 173°M and Westfield church spire bears 303°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 1340 you take two bearings with a hand-bearing compass: Mill stack bears 175°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 1500 you take two bearings with a hand-bearing compass: Heron Point Light bears 209°M and Gannet Rock daybeacon bears 102°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Red nun "2": 076 °T Distance: 1.60 nm | No. 390001 (worked solution) |
| 2 | Bearing from Red nun "2": 237 °T Distance: 1.40 nm | No. 390002 (worked solution) |
| 3 | Bearing from Tern Island tower: 147 °T Distance: 3.64 nm | No. 390003 (worked solution) |
| 4 | Bearing from Red nun "2": 131 °T Distance: 2.83 nm | No. 390004 (worked solution) |
| 5 | Bearing from Heron Point Light: 047 °T Distance: 1.54 nm | No. 390005 (worked solution) |
| 6 | Bearing from Red nun "2": 152 °T Distance: 1.08 nm | No. 390006 (worked solution) |
| 7 | Bearing from Green can "1": 056 °T Distance: 1.21 nm | No. 390007 (worked solution) |
| 8 | Bearing from Green can "1": 326 °T Distance: 1.38 nm | No. 390008 (worked solution) |