Worksheet 683 · Skill 4
Two-bearing fix
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At 1315 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 131°M and Westfield church spire bears 246°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 1740 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 090°M and Mill stack bears 147°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 1640 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 067°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 Mill stack to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Mill stack: ________ °T Distance: ________ nm
At 1605 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 099°M and Heron Point Light bears 200°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 1645 you take two bearings with a hand-bearing compass: Mill stack bears 209°M and Westfield church spire 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 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 1230 you take two bearings with a hand-bearing compass: Westfield church spire bears 259°M and Heron Point Light 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 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 0905 you take two bearings with a hand-bearing compass: Heron Point Light bears 266°M and Kittle water tank bears 163°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 0915 you take two bearings with a hand-bearing compass: Heron Point Light bears 278°M and Mill stack bears 173°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 Green can "3": 325 °T Distance: 3.32 nm | No. 683001 (worked solution) |
| 2 | Bearing from Red nun "2": 240 °T Distance: 1.48 nm | No. 683002 (worked solution) |
| 3 | Bearing from Mill stack: 022 °T Distance: 2.30 nm | No. 683003 (worked solution) |
| 4 | Bearing from Green can "1": 303 °T Distance: 1.53 nm | No. 683004 (worked solution) |
| 5 | Bearing from Tern Island tower: 170 °T Distance: 1.25 nm | No. 683005 (worked solution) |
| 6 | Bearing from Red nun "2": 309 °T Distance: 3.17 nm | No. 683006 (worked solution) |
| 7 | Bearing from Tern Island tower: 145 °T Distance: 3.70 nm | No. 683007 (worked solution) |
| 8 | Bearing from Green can "1": 136 °T Distance: 2.01 nm | No. 683008 (worked solution) |