Worksheet 49 · Skill 4
Two-bearing fix
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At 1015 you take two bearings with a hand-bearing compass: Mill stack bears 212°M and Kittle water tank bears 153°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 1000 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 142°M and Mill stack 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 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 1115 you take two bearings with a hand-bearing compass: Mill stack bears 197°M and Gannet Rock daybeacon bears 074°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 1600 you take two bearings with a hand-bearing compass: Westfield church spire bears 271°M and Mill stack bears 181°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: Kittle water tank bears 210°M and Gannet Rock daybeacon bears 298°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 Bell buoy "HS" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Bell buoy "HS": ________ °T Distance: ________ nm
At 0930 you take two bearings with a hand-bearing compass: Heron Point Light bears 204°M and Gannet Rock daybeacon bears 128°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 0710 you take two bearings with a hand-bearing compass: Heron Point Light bears 231°M and Westfield church spire bears 320°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 1645 you take two bearings with a hand-bearing compass: Heron Point Light bears 229°M and Mill stack bears 161°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 163 °T Distance: 1.47 nm | No. 49001 (worked solution) |
| 2 | Bearing from Tern Island tower: 155 °T Distance: 1.42 nm | No. 49002 (worked solution) |
| 3 | Bearing from Red nun "2": 130 °T Distance: 2.11 nm | No. 49003 (worked solution) |
| 4 | Bearing from Green can "3": 326 °T Distance: 1.23 nm | No. 49004 (worked solution) |
| 5 | Bearing from Bell buoy "HS": 179 °T Distance: 4.68 nm | No. 49005 (worked solution) |
| 6 | Bearing from Green can "3": 320 °T Distance: 3.20 nm | No. 49006 (worked solution) |
| 7 | Bearing from Green can "1": 241 °T Distance: 1.11 nm | No. 49007 (worked solution) |
| 8 | Bearing from Green can "3": 245 °T Distance: 2.11 nm | No. 49008 (worked solution) |