Worksheet 865 · Skill 4
Two-bearing fix
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At 1020 you take two bearings with a hand-bearing compass: Mill stack bears 184°M and Westfield church spire bears 251°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: Westfield church spire bears 270°M and Heron Point Light bears 216°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 0700 you take two bearings with a hand-bearing compass: Westfield church spire bears 303°M and Gannet Rock daybeacon bears 062°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 1245 you take two bearings with a hand-bearing compass: Westfield church spire bears 262°M and Mill stack bears 193°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 1025 you take two bearings with a hand-bearing compass: Mill stack bears 211°M and Westfield church spire bears 301°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 1410 you take two bearings with a hand-bearing compass: Kittle water tank bears 142°M and Heron Point Light bears 227°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 0900 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 127°M and Heron Point Light bears 248°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 1210 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 099°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 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 Tern Island tower: 302 °T Distance: 2.60 nm | No. 865001 (worked solution) |
| 2 | Bearing from Green can "3": 303 °T Distance: 1.83 nm | No. 865002 (worked solution) |
| 3 | Bearing from Mill stack: 029 °T Distance: 2.18 nm | No. 865003 (worked solution) |
| 4 | Bearing from Tern Island tower: 297 °T Distance: 1.23 nm | No. 865004 (worked solution) |
| 5 | Bearing from Green can "3": 160 °T Distance: 2.55 nm | No. 865005 (worked solution) |
| 6 | Bearing from Green can "3": 349 °T Distance: 1.25 nm | No. 865006 (worked solution) |
| 7 | Bearing from Tern Island tower: 178 °T Distance: 1.48 nm | No. 865007 (worked solution) |
| 8 | Bearing from Green can "1": 035 °T Distance: 0.94 nm | No. 865008 (worked solution) |