Worksheet 177 · Skill 4
Two-bearing fix
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At 1100 you take two bearings with a hand-bearing compass: Heron Point Light bears 184°M and Westfield church spire bears 249°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 1645 you take two bearings with a hand-bearing compass: Mill stack bears 195°M and Westfield church spire bears 294°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 0935 you take two bearings with a hand-bearing compass: Mill stack bears 185°M and Heron Point Light bears 241°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 1545 you take two bearings with a hand-bearing compass: Heron Point Light bears 253°M and Kittle water tank 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 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 0755 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 086°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 1035 you take two bearings with a hand-bearing compass: Westfield church spire bears 302°M and Gannet Rock daybeacon bears 059°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 Mill stack to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Mill stack: ________ °T Distance: ________ nm
At 1355 you take two bearings with a hand-bearing compass: Westfield church spire bears 272°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 0840 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 096°M and Mill stack bears 184°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 Red nun "2": 311 °T Distance: 3.48 nm | No. 177001 (worked solution) |
| 2 | Bearing from Green can "3": 165 °T Distance: 1.37 nm | No. 177002 (worked solution) |
| 3 | Bearing from Red nun "2": 064 °T Distance: 1.17 nm | No. 177003 (worked solution) |
| 4 | Bearing from Gannet Rock daybeacon: 323 °T Distance: 1.13 nm | No. 177004 (worked solution) |
| 5 | Bearing from Green can "1": 235 °T Distance: 1.08 nm | No. 177005 (worked solution) |
| 6 | Bearing from Mill stack: 035 °T Distance: 2.33 nm | No. 177006 (worked solution) |
| 7 | Bearing from Red nun "2": 309 °T Distance: 2.55 nm | No. 177007 (worked solution) |
| 8 | Bearing from Green can "3": 197 °T Distance: 1.01 nm | No. 177008 (worked solution) |