Worksheet 261 · Skill 4
Two-bearing fix
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At 1645 you take two bearings with a hand-bearing compass: Kittle water tank bears 186°M and Gannet Rock daybeacon bears 304°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 1645 you take two bearings with a hand-bearing compass: Kittle water tank bears 156°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 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 1530 you take two bearings with a hand-bearing compass: Mill stack bears 177°M and Westfield church spire bears 271°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 1630 you take two bearings with a hand-bearing compass: Westfield church spire bears 292°M and Heron Point Light bears 232°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 1135 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 122°M and Westfield church spire bears 234°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 1040 you take two bearings with a hand-bearing compass: Heron Point Light bears 230°M and Westfield church spire bears 290°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 1710 you take two bearings with a hand-bearing compass: Westfield church spire bears 285°M and Mill stack bears 175°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 1305 you take two bearings with a hand-bearing compass: Heron Point Light bears 189°M and Gannet Rock daybeacon bears 106°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 Westfield church spire to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Westfield church spire: ________ °T Distance: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 135 °T Distance: 4.49 nm | No. 261001 (worked solution) |
| 2 | Bearing from Gannet Rock daybeacon: 315 °T Distance: 1.44 nm | No. 261002 (worked solution) |
| 3 | Bearing from Green can "3": 312 °T Distance: 1.46 nm | No. 261003 (worked solution) |
| 4 | Bearing from Green can "1": 029 °T Distance: 1.00 nm | No. 261004 (worked solution) |
| 5 | Bearing from Red nun "2": 325 °T Distance: 4.00 nm | No. 261005 (worked solution) |
| 6 | Bearing from Green can "1": 024 °T Distance: 1.14 nm | No. 261006 (worked solution) |
| 7 | Bearing from Red nun "2": 018 °T Distance: 0.80 nm | No. 261007 (worked solution) |
| 8 | Bearing from Westfield church spire: 098 °T Distance: 2.03 nm | No. 261008 (worked solution) |