Worksheet 948 · Skill 4
Two-bearing fix
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At 1205 you take two bearings with a hand-bearing compass: Kittle water tank bears 147°M and Heron Point Light bears 222°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 1230 you take two bearings with a hand-bearing compass: Heron Point Light bears 231°M and Gannet Rock daybeacon bears 113°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 1415 you take two bearings with a hand-bearing compass: Mill stack bears 179°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 1055 you take two bearings with a hand-bearing compass: Heron Point Light bears 255°M and Kittle water tank bears 152°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 1525 you take two bearings with a hand-bearing compass: Westfield church spire bears 255°M and Mill stack bears 157°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 0930 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 099°M and Mill stack bears 176°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 1440 you take two bearings with a hand-bearing compass: Mill stack bears 190°M and Westfield church spire bears 275°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 1405 you take two bearings with a hand-bearing compass: Mill stack bears 166°M and Heron Point Light bears 264°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 Tern Island tower: 286 °T Distance: 1.95 nm | No. 948001 (worked solution) |
| 2 | Bearing from Red nun "2": 030 °T Distance: 1.36 nm | No. 948002 (worked solution) |
| 3 | Bearing from Red nun "2": 029 °T Distance: 1.12 nm | No. 948003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 295 °T Distance: 1.15 nm | No. 948004 (worked solution) |
| 5 | Bearing from Red nun "2": 315 °T Distance: 3.16 nm | No. 948005 (worked solution) |
| 6 | Bearing from Green can "3": 229 °T Distance: 1.13 nm | No. 948006 (worked solution) |
| 7 | Bearing from Tern Island tower: 239 °T Distance: 1.77 nm | No. 948007 (worked solution) |
| 8 | Bearing from Green can "1": 130 °T Distance: 1.19 nm | No. 948008 (worked solution) |