Worksheet 500 · Skill 4
Two-bearing fix
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At 1510 you take two bearings with a hand-bearing compass: Heron Point Light bears 208°M and Gannet Rock daybeacon bears 130°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 1620 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 080°M and Westfield church spire bears 322°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 1140 you take two bearings with a hand-bearing compass: Westfield church spire bears 262°M and Mill stack bears 161°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 1000 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 131°M and Mill stack bears 210°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: Gannet Rock daybeacon bears 313°M and Kittle water tank bears 238°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 1115 you take two bearings with a hand-bearing compass: Heron Point Light bears 227°M and Gannet Rock daybeacon bears 117°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 1300 you take two bearings with a hand-bearing compass: Heron Point Light bears 212°M and Gannet Rock daybeacon bears 100°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 1000 you take two bearings with a hand-bearing compass: Mill stack bears 165°M and Westfield church spire bears 254°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 326 °T Distance: 2.95 nm | No. 500001 (worked solution) |
| 2 | Bearing from Green can "1": 202 °T Distance: 1.30 nm | No. 500002 (worked solution) |
| 3 | Bearing from Red nun "2": 322 °T Distance: 2.67 nm | No. 500003 (worked solution) |
| 4 | Bearing from Tern Island tower: 171 °T Distance: 1.45 nm | No. 500004 (worked solution) |
| 5 | Bearing from Bell buoy "HS": 175 °T Distance: 5.78 nm | No. 500005 (worked solution) |
| 6 | Bearing from Green can "3": 311 °T Distance: 0.97 nm | No. 500006 (worked solution) |
| 7 | Bearing from Green can "1": 322 °T Distance: 1.17 nm | No. 500007 (worked solution) |
| 8 | Bearing from Red nun "2": 333 °T Distance: 2.98 nm | No. 500008 (worked solution) |