Worksheet 879 · Skill 4
Two-bearing fix
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At 1030 you take two bearings with a hand-bearing compass: Mill stack bears 220°M and Kittle water tank 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 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 0705 you take two bearings with a hand-bearing compass: Mill stack bears 207°M and Gannet Rock daybeacon bears 132°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 0700 you take two bearings with a hand-bearing compass: Westfield church spire bears 295°M and Mill stack bears 179°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 0820 you take two bearings with a hand-bearing compass: Kittle water tank bears 148°M and Heron Point Light bears 268°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 1410 you take two bearings with a hand-bearing compass: Heron Point Light bears 211°M and Gannet Rock daybeacon bears 115°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 0935 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 133°M and Westfield church spire bears 246°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 0820 you take two bearings with a hand-bearing compass: Mill stack bears 223°M and Westfield church spire bears 296°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 1145 you take two bearings with a hand-bearing compass: Mill stack bears 157°M and Heron Point Light bears 207°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Gannet Rock daybeacon: 267 °T Distance: 1.24 nm | No. 879001 (worked solution) |
| 2 | Bearing from Tern Island tower: 180 °T Distance: 1.24 nm | No. 879002 (worked solution) |
| 3 | Bearing from Green can "3": 208 °T Distance: 1.27 nm | No. 879003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 198 °T Distance: 0.95 nm | No. 879004 (worked solution) |
| 5 | Bearing from Red nun "2": 338 °T Distance: 1.93 nm | No. 879005 (worked solution) |
| 6 | Bearing from Green can "3": 330 °T Distance: 3.31 nm | No. 879006 (worked solution) |
| 7 | Bearing from Gannet Rock daybeacon: 237 °T Distance: 2.07 nm | No. 879007 (worked solution) |
| 8 | Bearing from Green can "1": 330 °T Distance: 1.59 nm | No. 879008 (worked solution) |