Worksheet 69 · Skill 4
Two-bearing fix
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At 1545 you take two bearings with a hand-bearing compass: Westfield church spire bears 229°M and Mill stack bears 149°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 1650 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 117°M and Mill stack bears 169°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 1425 you take two bearings with a hand-bearing compass: Heron Point Light bears 219°M and Gannet Rock daybeacon bears 120°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 1340 you take two bearings with a hand-bearing compass: Kittle water tank bears 142°M and Heron Point Light bears 257°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
At 1540 you take two bearings with a hand-bearing compass: Westfield church spire bears 250°M and Mill stack bears 175°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 0940 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 111°M and Mill stack bears 198°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 1005 you take two bearings with a hand-bearing compass: Heron Point Light bears 272°M and Kittle water tank bears 156°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
At 1100 you take two bearings with a hand-bearing compass: Mill stack bears 155°M and Gannet Rock daybeacon bears 072°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 "1": 315 °T Distance: 4.09 nm | No. 69001 (worked solution) |
| 2 | Bearing from Red nun "2": 342 °T Distance: 2.08 nm | No. 69002 (worked solution) |
| 3 | Bearing from Green can "3": 312 °T Distance: 1.63 nm | No. 69003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 271 °T Distance: 1.63 nm | No. 69004 (worked solution) |
| 5 | Bearing from Green can "3": 327 °T Distance: 3.00 nm | No. 69005 (worked solution) |
| 6 | Bearing from Tern Island tower: 208 °T Distance: 2.05 nm | No. 69006 (worked solution) |
| 7 | Bearing from Gannet Rock daybeacon: 163 °T Distance: 1.39 nm | No. 69007 (worked solution) |
| 8 | Bearing from Green can "1": 152 °T Distance: 1.74 nm | No. 69008 (worked solution) |