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Worksheet 342 · Skill 4

Two-bearing fix

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  1. At 1220 you take two bearings with a hand-bearing compass: Mill stack bears 191°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 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  

  2. At 0705 you take two bearings with a hand-bearing compass: Westfield church spire bears 292°M and Mill stack 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 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  

  3. At 0715 you take two bearings with a hand-bearing compass: Kittle water tank bears 157°M and Mill stack bears 216°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  

  4. At 1210 you take two bearings with a hand-bearing compass: Mill stack bears 179°M and Westfield church spire bears 276°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  

  5. At 1715 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 105°M and Heron Point Light bears 232°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  

  6. At 1315 you take two bearings with a hand-bearing compass: Mill stack bears 199°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  

  7. At 1055 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 123°M and Heron Point Light bears 193°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 Westfield church spire to the fix, and the distance.

    Tolerance: 2° and 0.15 nm (or 4 % of the distance).

    Bearing from Westfield church spire: ________ °T   Distance: ________ nm  

  8. At 1115 you take two bearings with a hand-bearing compass: Heron Point Light bears 242°M and Gannet Rock daybeacon bears 116°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

Practice Sheet No. 1 with the starting fixes of this worksheet 34 41 22 38 29 18 27 44 12 21 19 N VAR 7°W (invented) Heron Sound Heron Point Tern Island Westfield Kittle Gannet Rock Fl W 4s 52ft 14M TR TANK SPIRE STACK Dbn 1 2 3 HS 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Border scale: nautical miles (1 nm = 10 ticks) PRACTICE SHEET No. 1 · HERON SOUNDInvented for practice · NOT FOR NAVIGATION · Plotroom

Answer key

No.AnswersProblem
1Bearing from Tern Island tower: 303 °T
Distance: 1.56 nm
No. 342001 (worked solution)
2Bearing from Gannet Rock daybeacon: 252 °T
Distance: 1.82 nm
No. 342002 (worked solution)
3Bearing from Gannet Rock daybeacon: 318 °T
Distance: 1.44 nm
No. 342003 (worked solution)
4Bearing from Green can "3": 305 °T
Distance: 1.01 nm
No. 342004 (worked solution)
5Bearing from Green can "3": 256 °T
Distance: 1.09 nm
No. 342005 (worked solution)
6Bearing from Green can "3": 157 °T
Distance: 1.51 nm
No. 342006 (worked solution)
7Bearing from Westfield church spire: 053 °T
Distance: 3.07 nm
No. 342007 (worked solution)
8Bearing from Tern Island tower: 217 °T
Distance: 1.87 nm
No. 342008 (worked solution)