Worksheet 662 · Skill 4
Two-bearing fix
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At 0910 you take two bearings with a hand-bearing compass: Mill stack bears 208°M and Gannet Rock daybeacon bears 132°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 1045 you take two bearings with a hand-bearing compass: Kittle water tank bears 157°M and Heron Point Light bears 270°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 1005 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 126°M and Mill stack bears 179°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 1345 you take two bearings with a hand-bearing compass: Heron Point Light bears 184°M and Westfield church spire bears 296°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 1605 you take two bearings with a hand-bearing compass: Kittle water tank bears 202°M and Gannet Rock daybeacon bears 273°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 1020 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 102°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
At 0715 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 093°M and Westfield church spire bears 326°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 Heron Point Light to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Heron Point Light: ________ °T Distance: ________ nm
At 1020 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 126°M and Westfield church spire 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 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 Tern Island tower: 176 °T Distance: 1.30 nm | No. 662001 (worked solution) |
| 2 | Bearing from Gannet Rock daybeacon: 165 °T Distance: 1.12 nm | No. 662002 (worked solution) |
| 3 | Bearing from Green can "3": 328 °T Distance: 1.85 nm | No. 662003 (worked solution) |
| 4 | Bearing from Green can "1": 306 °T Distance: 2.40 nm | No. 662004 (worked solution) |
| 5 | Bearing from Bell buoy "HS": 179 °T Distance: 3.64 nm | No. 662005 (worked solution) |
| 6 | Bearing from Green can "1": 024 °T Distance: 1.13 nm | No. 662006 (worked solution) |
| 7 | Bearing from Heron Point Light: 351 °T Distance: 1.50 nm | No. 662007 (worked solution) |
| 8 | Bearing from Red nun "2": 335 °T Distance: 3.92 nm | No. 662008 (worked solution) |