Worksheet 643 · Skill 4
Two-bearing fix
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At 1335 you take two bearings with a hand-bearing compass: Kittle water tank bears 184°M and Gannet Rock daybeacon bears 267°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 1040 you take two bearings with a hand-bearing compass: Mill stack bears 143°M and Gannet Rock daybeacon bears 093°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 1130 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 123°M and Heron Point Light bears 231°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 1055 you take two bearings with a hand-bearing compass: Heron Point Light bears 199°M and Gannet Rock daybeacon bears 099°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 1230 you take two bearings with a hand-bearing compass: Mill stack bears 206°M and Heron Point Light bears 279°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 1115 you take two bearings with a hand-bearing compass: Westfield church spire bears 250°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 0940 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 091°M and Heron Point Light bears 211°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 0925 you take two bearings with a hand-bearing compass: Westfield church spire bears 276°M and Mill stack bears 178°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Bell buoy "HS": 195 °T Distance: 3.71 nm | No. 643001 (worked solution) |
| 2 | Bearing from Green can "1": 276 °T Distance: 1.33 nm | No. 643002 (worked solution) |
| 3 | Bearing from Green can "3": 354 °T Distance: 0.85 nm | No. 643003 (worked solution) |
| 4 | Bearing from Green can "1": 302 °T Distance: 1.57 nm | No. 643004 (worked solution) |
| 5 | Bearing from Red nun "2": 141 °T Distance: 2.76 nm | No. 643005 (worked solution) |
| 6 | Bearing from Green can "3": 325 °T Distance: 3.01 nm | No. 643006 (worked solution) |
| 7 | Bearing from Green can "1": 266 °T Distance: 1.22 nm | No. 643007 (worked solution) |
| 8 | Bearing from Green can "3": 302 °T Distance: 1.09 nm | No. 643008 (worked solution) |