Worksheet 746 · Skill 4
Two-bearing fix
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At 0825 you take two bearings with a hand-bearing compass: Heron Point Light bears 192°M and Gannet Rock daybeacon bears 108°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 Westfield church spire to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Westfield church spire: ________ °T Distance: ________ nm
At 0745 you take two bearings with a hand-bearing compass: Heron Point Light bears 212°M and Gannet Rock daybeacon bears 132°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 0910 you take two bearings with a hand-bearing compass: Mill stack bears 168°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 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 1130 you take two bearings with a hand-bearing compass: Mill stack bears 191°M and Gannet Rock daybeacon bears 083°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 1730 you take two bearings with a hand-bearing compass: Mill stack bears 172°M and Gannet Rock daybeacon bears 121°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 1540 you take two bearings with a hand-bearing compass: Westfield church spire bears 292°M and Heron Point Light bears 239°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 1050 you take two bearings with a hand-bearing compass: Westfield church spire bears 322°M and Heron Point Light bears 260°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 1400 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 183°M and Heron Point Light bears 252°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Westfield church spire: 091 °T Distance: 2.19 nm | No. 746001 (worked solution) |
| 2 | Bearing from Green can "3": 333 °T Distance: 2.70 nm | No. 746002 (worked solution) |
| 3 | Bearing from Green can "1": 012 °T Distance: 1.35 nm | No. 746003 (worked solution) |
| 4 | Bearing from Red nun "2": 121 °T Distance: 1.64 nm | No. 746004 (worked solution) |
| 5 | Bearing from Green can "3": 310 °T Distance: 2.23 nm | No. 746005 (worked solution) |
| 6 | Bearing from Green can "3": 232 °T Distance: 1.20 nm | No. 746006 (worked solution) |
| 7 | Bearing from Green can "1": 212 °T Distance: 1.23 nm | No. 746007 (worked solution) |
| 8 | Bearing from Tern Island tower: 125 °T Distance: 2.08 nm | No. 746008 (worked solution) |