Worksheet 857 · Skill 4
Two-bearing fix
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At 1040 you take two bearings with a hand-bearing compass: Westfield church spire bears 273°M and Mill stack bears 163°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 0725 you take two bearings with a hand-bearing compass: Heron Point Light bears 254°M and Kittle water tank bears 155°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 1045 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 134°M and Westfield church spire bears 245°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 1435 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 273°M and Kittle water tank bears 181°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 1355 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 135°M and Westfield church spire bears 227°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 0800 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 126°M and Heron Point Light bears 250°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 1155 you take two bearings with a hand-bearing compass: Heron Point Light bears 252°M and Gannet Rock daybeacon bears 145°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 1635 you take two bearings with a hand-bearing compass: Mill stack bears 190°M and Heron Point Light bears 241°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": 324 °T Distance: 2.00 nm | No. 857001 (worked solution) |
| 2 | Bearing from Gannet Rock daybeacon: 307 °T Distance: 1.12 nm | No. 857002 (worked solution) |
| 3 | Bearing from Green can "3": 331 °T Distance: 3.40 nm | No. 857003 (worked solution) |
| 4 | Bearing from Tern Island tower: 130 °T Distance: 3.76 nm | No. 857004 (worked solution) |
| 5 | Bearing from Green can "3": 326 °T Distance: 4.79 nm | No. 857005 (worked solution) |
| 6 | Bearing from Tern Island tower: 172 °T Distance: 1.65 nm | No. 857006 (worked solution) |
| 7 | Bearing from Tern Island tower: 149 °T Distance: 1.81 nm | No. 857007 (worked solution) |
| 8 | Bearing from Red nun "2": 061 °T Distance: 1.64 nm | No. 857008 (worked solution) |