Worksheet 660 · Skill 4
Two-bearing fix
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At 1735 you take two bearings with a hand-bearing compass: Kittle water tank bears 146°M and Mill stack bears 221°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 1715 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 130°M and Heron Point Light 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 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 1415 you take two bearings with a hand-bearing compass: Westfield church spire bears 229°M and Gannet Rock daybeacon bears 133°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 1800 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 114°M and Heron Point Light bears 212°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 1330 you take two bearings with a hand-bearing compass: Westfield church spire bears 249°M and Gannet Rock daybeacon bears 127°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 1405 you take two bearings with a hand-bearing compass: Westfield church spire bears 294°M and Heron Point Light bears 211°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 1555 you take two bearings with a hand-bearing compass: Heron Point Light bears 268°M and Kittle water tank bears 159°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 1105 you take two bearings with a hand-bearing compass: Heron Point Light bears 252°M and Mill stack bears 188°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Gannet Rock daybeacon: 267 °T Distance: 1.15 nm | No. 660001 (worked solution) |
| 2 | Bearing from Green can "3": 320 °T Distance: 3.96 nm | No. 660002 (worked solution) |
| 3 | Bearing from Green can "3": 323 °T Distance: 4.58 nm | No. 660003 (worked solution) |
| 4 | Bearing from Red nun "2": 338 °T Distance: 1.81 nm | No. 660004 (worked solution) |
| 5 | Bearing from Green can "3": 318 °T Distance: 3.17 nm | No. 660005 (worked solution) |
| 6 | Bearing from Green can "1": 327 °T Distance: 1.29 nm | No. 660006 (worked solution) |
| 7 | Bearing from Gannet Rock daybeacon: 164 °T Distance: 0.86 nm | No. 660007 (worked solution) |
| 8 | Bearing from Green can "3": 182 °T Distance: 1.19 nm | No. 660008 (worked solution) |