Worksheet 172 · Skill 4
Two-bearing fix
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At 1500 you take two bearings with a hand-bearing compass: Heron Point Light bears 172°M and Gannet Rock daybeacon bears 101°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 0830 you take two bearings with a hand-bearing compass: Westfield church spire bears 264°M and Kittle water tank bears 144°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 1610 you take two bearings with a hand-bearing compass: Mill stack bears 217°M and Gannet Rock daybeacon bears 089°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 1515 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 005°M and Heron Point Light bears 272°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 Kittle water tank to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Kittle water tank: ________ °T Distance: ________ nm
At 1425 you take two bearings with a hand-bearing compass: Heron Point Light bears 210°M and Gannet Rock daybeacon bears 107°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 0755 you take two bearings with a hand-bearing compass: Mill stack bears 186°M and Westfield church spire bears 264°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 1320 you take two bearings with a hand-bearing compass: Mill stack bears 193°M and Gannet Rock daybeacon bears 094°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 1530 you take two bearings with a hand-bearing compass: Westfield church spire bears 277°M and Mill stack bears 148°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 Westfield church spire: 125 °T Distance: 1.48 nm | No. 172001 (worked solution) |
| 2 | Bearing from Green can "3": 349 °T Distance: 1.75 nm | No. 172002 (worked solution) |
| 3 | Bearing from Green can "3": 121 °T Distance: 2.21 nm | No. 172003 (worked solution) |
| 4 | Bearing from Kittle water tank: 320 °T Distance: 2.12 nm | No. 172004 (worked solution) |
| 5 | Bearing from Red nun "2": 313 °T Distance: 1.52 nm | No. 172005 (worked solution) |
| 6 | Bearing from Green can "3": 353 °T Distance: 1.76 nm | No. 172006 (worked solution) |
| 7 | Bearing from Green can "3": 166 °T Distance: 1.10 nm | No. 172007 (worked solution) |
| 8 | Bearing from Green can "1": 311 °T Distance: 3.07 nm | No. 172008 (worked solution) |