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Worksheet 944 · Skill 4

Two-bearing fix

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  1. At 0830 you take two bearings with a hand-bearing compass: Heron Point Light bears 208°M and Gannet Rock daybeacon bears 099°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  

  2. At 0905 you take two bearings with a hand-bearing compass: Westfield church spire bears 232°M and Heron Point Light bears 173°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  

  3. At 1645 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 166°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 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  

  4. At 0925 you take two bearings with a hand-bearing compass: Heron Point Light bears 209°M and Mill stack 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 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  

  5. At 1135 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 107°M and Mill stack bears 207°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 1540 you take two bearings with a hand-bearing compass: Heron Point Light bears 209°M and Westfield church spire bears 310°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  

  7. At 1305 you take two bearings with a hand-bearing compass: Westfield church spire bears 304°M and Gannet Rock daybeacon bears 056°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  

  8. At 1100 you take two bearings with a hand-bearing compass: Heron Point Light bears 221°M and Westfield church spire bears 275°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

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 Green can "1": 311 °T
Distance: 1.25 nm
No. 944001 (worked solution)
2Bearing from Green can "1": 315 °T
Distance: 4.03 nm
No. 944002 (worked solution)
3Bearing from Tern Island tower: 131 °T
Distance: 1.68 nm
No. 944003 (worked solution)
4Bearing from Green can "1": 315 °T
Distance: 1.24 nm
No. 944004 (worked solution)
5Bearing from Green can "3": 111 °T
Distance: 1.48 nm
No. 944005 (worked solution)
6Bearing from Green can "1": 286 °T
Distance: 1.15 nm
No. 944006 (worked solution)
7Bearing from Mill stack: 037 °T
Distance: 2.08 nm
No. 944007 (worked solution)
8Bearing from Green can "3": 296 °T
Distance: 1.46 nm
No. 944008 (worked solution)