Worksheet 308 · Skill 4
Two-bearing fix
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At 0940 you take two bearings with a hand-bearing compass: Mill stack bears 175°M and Westfield church spire 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 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 0730 you take two bearings with a hand-bearing compass: Heron Point Light bears 239°M and Gannet Rock daybeacon bears 112°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 0745 you take two bearings with a hand-bearing compass: Mill stack bears 175°M and Westfield church spire bears 287°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 1230 you take two bearings with a hand-bearing compass: Westfield church spire bears 278°M and Mill stack bears 153°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 0755 you take two bearings with a hand-bearing compass: Westfield church spire bears 221°M and Heron Point Light 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 "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 1120 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 314°M and Kittle water tank bears 198°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 1720 you take two bearings with a hand-bearing compass: Heron Point Light bears 260°M and Mill stack bears 153°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 1630 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 141°M and Heron Point Light 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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "3": 328 °T Distance: 3.16 nm | No. 308001 (worked solution) |
| 2 | Bearing from Red nun "2": 055 °T Distance: 1.63 nm | No. 308002 (worked solution) |
| 3 | Bearing from Green can "3": 253 °T Distance: 1.06 nm | No. 308003 (worked solution) |
| 4 | Bearing from Green can "1": 321 °T Distance: 2.54 nm | No. 308004 (worked solution) |
| 5 | Bearing from Green can "1": 314 °T Distance: 4.25 nm | No. 308005 (worked solution) |
| 6 | Bearing from Bell buoy "HS": 185 °T Distance: 5.13 nm | No. 308006 (worked solution) |
| 7 | Bearing from Green can "1": 163 °T Distance: 0.81 nm | No. 308007 (worked solution) |
| 8 | Bearing from Tern Island tower: 153 °T Distance: 1.68 nm | No. 308008 (worked solution) |