Worksheet 117 · Skill 4
Two-bearing fix
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At 0825 you take two bearings with a hand-bearing compass: Kittle water tank bears 157°M and Mill stack bears 215°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 1145 you take two bearings with a hand-bearing compass: Heron Point Light bears 197°M and Westfield church spire bears 317°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: Gannet Rock daybeacon bears 300°M and Kittle water tank bears 200°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 1235 you take two bearings with a hand-bearing compass: Kittle water tank bears 209°M and Gannet Rock daybeacon bears 303°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 1030 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 105°M and Heron Point Light bears 218°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 1010 you take two bearings with a hand-bearing compass: Westfield church spire bears 278°M and Mill stack bears 159°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 0740 you take two bearings with a hand-bearing compass: Westfield church spire bears 305°M and Mill stack bears 180°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 1610 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 099°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 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: 149 °T Distance: 1.55 nm | No. 117001 (worked solution) |
| 2 | Bearing from Green can "1": 276 °T Distance: 1.53 nm | No. 117002 (worked solution) |
| 3 | Bearing from Bell buoy "HS": 184 °T Distance: 4.62 nm | No. 117003 (worked solution) |
| 4 | Bearing from Bell buoy "HS": 180 °T Distance: 4.86 nm | No. 117004 (worked solution) |
| 5 | Bearing from Red nun "2": 317 °T Distance: 1.07 nm | No. 117005 (worked solution) |
| 6 | Bearing from Red nun "2": 312 °T Distance: 2.01 nm | No. 117006 (worked solution) |
| 7 | Bearing from Red nun "2": 146 °T Distance: 1.65 nm | No. 117007 (worked solution) |
| 8 | Bearing from Green can "1": 331 °T Distance: 0.92 nm | No. 117008 (worked solution) |