Worksheet 13 · Skill 4
Two-bearing fix
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At 1200 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 063°M and Westfield church spire bears 297°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 0720 you take two bearings with a hand-bearing compass: Heron Point Light bears 251°M and Kittle water tank bears 145°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: Heron Point Light bears 250°M and Kittle water tank 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 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 1745 you take two bearings with a hand-bearing compass: Mill stack bears 188°M and Westfield church spire bears 310°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 1545 you take two bearings with a hand-bearing compass: Westfield church spire bears 278°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 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 1605 you take two bearings with a hand-bearing compass: Kittle water tank bears 234°M and Gannet Rock daybeacon bears 310°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 Bell buoy "HS" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Bell buoy "HS": ________ °T Distance: ________ nm
At 1355 you take two bearings with a hand-bearing compass: Mill stack bears 225°M and Kittle water tank bears 151°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 1300 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 068°M and Westfield church spire bears 309°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 142 °T Distance: 2.71 nm | No. 13001 (worked solution) |
| 2 | Bearing from Green can "3": 100 °T Distance: 1.68 nm | No. 13002 (worked solution) |
| 3 | Bearing from Tern Island tower: 173 °T Distance: 1.66 nm | No. 13003 (worked solution) |
| 4 | Bearing from Green can "1": 131 °T Distance: 2.42 nm | No. 13004 (worked solution) |
| 5 | Bearing from Tern Island tower: 153 °T Distance: 1.39 nm | No. 13005 (worked solution) |
| 6 | Bearing from Bell buoy "HS": 175 °T Distance: 5.59 nm | No. 13006 (worked solution) |
| 7 | Bearing from Tern Island tower: 158 °T Distance: 2.76 nm | No. 13007 (worked solution) |
| 8 | Bearing from Mill stack: 359 °T Distance: 1.69 nm | No. 13008 (worked solution) |