Worksheet 781 · Skill 4
Two-bearing fix
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At 1220 you take two bearings with a hand-bearing compass: Westfield church spire bears 315°M and Gannet Rock daybeacon bears 085°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 1505 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 079°M and Mill stack bears 146°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 1050 you take two bearings with a hand-bearing compass: Kittle water tank bears 147°M and Mill stack bears 204°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 1100 you take two bearings with a hand-bearing compass: Heron Point Light bears 221°M and Mill stack bears 170°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 1255 you take two bearings with a hand-bearing compass: Westfield church spire bears 267°M and Mill stack bears 171°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 0955 you take two bearings with a hand-bearing compass: Westfield church spire bears 279°M and Mill stack bears 152°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 1055 you take two bearings with a hand-bearing compass: Heron Point Light bears 264°M and Mill stack bears 177°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 1130 you take two bearings with a hand-bearing compass: Heron Point Light bears 255°M and Westfield church spire bears 315°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 Red nun "2": 218 °T Distance: 1.54 nm | No. 781001 (worked solution) |
| 2 | Bearing from Green can "1": 176 °T Distance: 1.13 nm | No. 781002 (worked solution) |
| 3 | Bearing from Tern Island tower: 193 °T Distance: 1.35 nm | No. 781003 (worked solution) |
| 4 | Bearing from Red nun "2": 346 °T Distance: 1.18 nm | No. 781004 (worked solution) |
| 5 | Bearing from Green can "3": 304 °T Distance: 2.11 nm | No. 781005 (worked solution) |
| 6 | Bearing from Green can "1": 318 °T Distance: 2.59 nm | No. 781006 (worked solution) |
| 7 | Bearing from Red nun "2": 149 °T Distance: 1.48 nm | No. 781007 (worked solution) |
| 8 | Bearing from Red nun "2": 210 °T Distance: 1.56 nm | No. 781008 (worked solution) |