Worksheet 83 · Skill 4
Two-bearing fix
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At 1335 you take two bearings with a hand-bearing compass: Westfield church spire bears 228°M and Mill stack bears 156°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 1015 you take two bearings with a hand-bearing compass: Heron Point Light bears 202°M and Gannet Rock daybeacon bears 112°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 0910 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 125°M and Mill stack bears 202°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 0900 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 164°M and Heron Point Light bears 248°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 0725 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 158°M and Heron Point Light bears 252°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 1350 you take two bearings with a hand-bearing compass: Mill stack bears 161°M and Heron Point Light bears 280°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 1405 you take two bearings with a hand-bearing compass: Mill stack bears 229°M and Kittle water tank bears 172°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 0935 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 108°M and Mill stack bears 158°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": 317 °T Distance: 4.19 nm | No. 83001 (worked solution) |
| 2 | Bearing from Red nun "2": 320 °T Distance: 2.19 nm | No. 83002 (worked solution) |
| 3 | Bearing from Green can "3": 076 °T Distance: 1.26 nm | No. 83003 (worked solution) |
| 4 | Bearing from Tern Island tower: 129 °T Distance: 1.43 nm | No. 83004 (worked solution) |
| 5 | Bearing from Tern Island tower: 140 °T Distance: 1.86 nm | No. 83005 (worked solution) |
| 6 | Bearing from Green can "1": 146 °T Distance: 1.87 nm | No. 83006 (worked solution) |
| 7 | Bearing from Gannet Rock daybeacon: 028 °T Distance: 0.84 nm | No. 83007 (worked solution) |
| 8 | Bearing from Red nun "2": 309 °T Distance: 1.97 nm | No. 83008 (worked solution) |