Worksheet 847 · Skill 4
Two-bearing fix
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At 0850 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 112°M and Mill stack bears 180°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 180°M and Gannet Rock daybeacon bears 103°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 0835 you take two bearings with a hand-bearing compass: Westfield church spire bears 301°M and Gannet Rock daybeacon bears 065°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 1735 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 121°M and Westfield church spire bears 232°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 1520 you take two bearings with a hand-bearing compass: Heron Point Light bears 244°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 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 1000 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 131°M and Heron Point Light bears 231°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 1555 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 072°M and Mill stack bears 153°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: Heron Point Light bears 183°M and Westfield church spire bears 235°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Red nun "2": 028 °T Distance: 1.28 nm | No. 847001 (worked solution) |
| 2 | Bearing from Westfield church spire: 111 °T Distance: 1.67 nm | No. 847002 (worked solution) |
| 3 | Bearing from Mill stack: 028 °T Distance: 2.43 nm | No. 847003 (worked solution) |
| 4 | Bearing from Red nun "2": 323 °T Distance: 4.07 nm | No. 847004 (worked solution) |
| 5 | Bearing from Green can "3": 076 °T Distance: 1.28 nm | No. 847005 (worked solution) |
| 6 | Bearing from Green can "3": 014 °T Distance: 1.29 nm | No. 847006 (worked solution) |
| 7 | Bearing from Green can "1": 154 °T Distance: 1.74 nm | No. 847007 (worked solution) |
| 8 | Bearing from Red nun "2": 316 °T Distance: 3.92 nm | No. 847008 (worked solution) |