Worksheet 645 · Skill 4
Two-bearing fix
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At 1225 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 070°M and Westfield church spire bears 301°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 0810 you take two bearings with a hand-bearing compass: Mill stack bears 156°M and Gannet Rock daybeacon bears 092°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 0715 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 118°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 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 1430 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 324°M and Kittle water tank bears 214°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 Mill stack to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Mill stack: ________ °T Distance: ________ nm
At 1150 you take two bearings with a hand-bearing compass: Kittle water tank bears 150°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 1055 you take two bearings with a hand-bearing compass: Mill stack bears 180°M and Westfield church spire bears 256°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 1700 you take two bearings with a hand-bearing compass: Kittle water tank bears 146°M and Heron Point Light bears 226°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 0915 you take two bearings with a hand-bearing compass: Heron Point Light bears 266°M and Kittle water tank bears 168°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": 163 °T Distance: 2.43 nm | No. 645001 (worked solution) |
| 2 | Bearing from Red nun "2": 237 °T Distance: 0.88 nm | No. 645002 (worked solution) |
| 3 | Bearing from Red nun "2": 322 °T Distance: 3.35 nm | No. 645003 (worked solution) |
| 4 | Bearing from Mill stack: 073 °T Distance: 5.74 nm | No. 645004 (worked solution) |
| 5 | Bearing from Gannet Rock daybeacon: 299 °T Distance: 1.67 nm | No. 645005 (worked solution) |
| 6 | Bearing from Green can "3": 338 °T Distance: 2.47 nm | No. 645006 (worked solution) |
| 7 | Bearing from Tern Island tower: 274 °T Distance: 1.67 nm | No. 645007 (worked solution) |
| 8 | Bearing from Tern Island tower: 142 °T Distance: 3.80 nm | No. 645008 (worked solution) |