Worksheet 15 · Skill 4
Two-bearing fix
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At 0710 you take two bearings with a hand-bearing compass: Mill stack bears 152°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 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 1215 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 305°M and Kittle water tank bears 229°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 1625 you take two bearings with a hand-bearing compass: Heron Point Light bears 189°M and Westfield church spire bears 259°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 0830 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 102°M and Heron Point Light bears 226°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 1515 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 095°M and Heron Point Light 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 "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 1740 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 134°M and Westfield church spire bears 250°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 1435 you take two bearings with a hand-bearing compass: Mill stack bears 183°M and Gannet Rock daybeacon bears 069°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 1005 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 129°M and Mill stack bears 212°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Green can "1": 156 °T Distance: 1.56 nm | No. 15001 (worked solution) |
| 2 | Bearing from Bell buoy "HS": 174 °T Distance: 5.31 nm | No. 15002 (worked solution) |
| 3 | Bearing from Red nun "2": 312 °T Distance: 3.06 nm | No. 15003 (worked solution) |
| 4 | Bearing from Green can "1": 010 °T Distance: 1.07 nm | No. 15004 (worked solution) |
| 5 | Bearing from Green can "1": 279 °T Distance: 2.16 nm | No. 15005 (worked solution) |
| 6 | Bearing from Green can "3": 335 °T Distance: 2.99 nm | No. 15006 (worked solution) |
| 7 | Bearing from Green can "1": 129 °T Distance: 2.17 nm | No. 15007 (worked solution) |
| 8 | Bearing from Tern Island tower: 168 °T Distance: 1.63 nm | No. 15008 (worked solution) |