Worksheet 704 · Skill 4
Two-bearing fix
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At 1545 you take two bearings with a hand-bearing compass: Mill stack bears 184°M and Westfield church spire bears 294°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: Gannet Rock daybeacon bears 048°M and Heron Point Light bears 279°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 1345 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 125°M and Heron Point Light bears 222°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: Heron Point Light bears 184°M and Gannet Rock daybeacon bears 112°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 1415 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 075°M and Mill stack bears 190°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 0930 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 092°M and Mill stack bears 176°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 1610 you take two bearings with a hand-bearing compass: Mill stack bears 188°M and Heron Point Light bears 244°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 0925 you take two bearings with a hand-bearing compass: Mill stack bears 216°M and Kittle water tank bears 146°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Red nun "2": 103 °T Distance: 1.04 nm | No. 704001 (worked solution) |
| 2 | Bearing from Mill stack: 048 °T Distance: 2.28 nm | No. 704002 (worked solution) |
| 3 | Bearing from Green can "3": 332 °T Distance: 1.53 nm | No. 704003 (worked solution) |
| 4 | Bearing from Westfield church spire: 071 °T Distance: 1.79 nm | No. 704004 (worked solution) |
| 5 | Bearing from Red nun "2": 137 °T Distance: 1.93 nm | No. 704005 (worked solution) |
| 6 | Bearing from Green can "1": 079 °T Distance: 1.18 nm | No. 704006 (worked solution) |
| 7 | Bearing from Red nun "2": 073 °T Distance: 1.33 nm | No. 704007 (worked solution) |
| 8 | Bearing from Gannet Rock daybeacon: 280 °T Distance: 1.44 nm | No. 704008 (worked solution) |