Worksheet 800 · Skill 4
Two-bearing fix
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At 1145 you take two bearings with a hand-bearing compass: Mill stack bears 186°M and Heron Point Light bears 270°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 1250 you take two bearings with a hand-bearing compass: Mill stack bears 149°M and Gannet Rock daybeacon bears 086°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 0805 you take two bearings with a hand-bearing compass: Westfield church spire bears 323°M and Gannet Rock daybeacon bears 083°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 Heron Point Light to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Heron Point Light: ________ °T Distance: ________ nm
At 0730 you take two bearings with a hand-bearing compass: Mill stack bears 164°M and Gannet Rock daybeacon bears 111°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: Heron Point Light bears 232°M and Mill stack bears 162°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 1725 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 131°M and Mill stack bears 191°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 1550 you take two bearings with a hand-bearing compass: Westfield church spire bears 259°M and Kittle water tank bears 147°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 1010 you take two bearings with a hand-bearing compass: Westfield church spire bears 283°M and Heron Point Light bears 188°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 Red nun "2": 143 °T Distance: 1.95 nm | No. 800001 (worked solution) |
| 2 | Bearing from Red nun "2": 217 °T Distance: 1.38 nm | No. 800002 (worked solution) |
| 3 | Bearing from Heron Point Light: 065 °T Distance: 1.05 nm | No. 800003 (worked solution) |
| 4 | Bearing from Red nun "2": 326 °T Distance: 1.74 nm | No. 800004 (worked solution) |
| 5 | Bearing from Green can "3": 241 °T Distance: 2.04 nm | No. 800005 (worked solution) |
| 6 | Bearing from Green can "3": 014 °T Distance: 1.29 nm | No. 800006 (worked solution) |
| 7 | Bearing from Tern Island tower: 288 °T Distance: 2.05 nm | No. 800007 (worked solution) |
| 8 | Bearing from Green can "1": 316 °T Distance: 2.50 nm | No. 800008 (worked solution) |