Worksheet 577 · Skill 4
Two-bearing fix
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At 0835 you take two bearings with a hand-bearing compass: Kittle water tank bears 218°M and Gannet Rock daybeacon bears 325°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 1535 you take two bearings with a hand-bearing compass: Westfield church spire bears 282°M and Heron Point Light bears 213°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 0855 you take two bearings with a hand-bearing compass: Heron Point Light bears 232°M and Westfield church spire bears 294°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 1150 you take two bearings with a hand-bearing compass: Mill stack bears 161°M and Westfield church spire bears 265°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 1120 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 158°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
At 1125 you take two bearings with a hand-bearing compass: Heron Point Light bears 225°M and Gannet Rock daybeacon bears 117°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 1355 you take two bearings with a hand-bearing compass: Heron Point Light bears 209°M and Gannet Rock daybeacon bears 110°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 1225 you take two bearings with a hand-bearing compass: Westfield church spire bears 305°M and Mill stack bears 220°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 Mill stack: 074 °T Distance: 5.74 nm | No. 577001 (worked solution) |
| 2 | Bearing from Red nun "2": 321 °T Distance: 1.41 nm | No. 577002 (worked solution) |
| 3 | Bearing from Green can "1": 025 °T Distance: 0.84 nm | No. 577003 (worked solution) |
| 4 | Bearing from Red nun "2": 322 °T Distance: 2.53 nm | No. 577004 (worked solution) |
| 5 | Bearing from Tern Island tower: 139 °T Distance: 1.74 nm | No. 577005 (worked solution) |
| 6 | Bearing from Green can "3": 308 °T Distance: 1.13 nm | No. 577006 (worked solution) |
| 7 | Bearing from Red nun "2": 322 °T Distance: 1.71 nm | No. 577007 (worked solution) |
| 8 | Bearing from Red nun "2": 133 °T Distance: 3.07 nm | No. 577008 (worked solution) |