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Worksheet 439 · Skill 4

Two-bearing fix

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  1. At 1340 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 120°M and Heron Point Light bears 217°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  

  2. At 1400 you take two bearings with a hand-bearing compass: Westfield church spire bears 240°M and Gannet Rock daybeacon bears 134°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  

  3. At 1545 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 116°M and Mill stack bears 179°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  

  4. At 1050 you take two bearings with a hand-bearing compass: Westfield church spire bears 252°M and Mill stack bears 169°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 1615 you take two bearings with a hand-bearing compass: Heron Point Light bears 250°M and Gannet Rock daybeacon 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 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  

  6. At 1405 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 122°M and Mill stack bears 204°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 1515 you take two bearings with a hand-bearing compass: Mill stack bears 174°M and Westfield church spire bears 254°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  

  8. At 1535 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 097°M and Heron Point Light bears 221°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  

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 "3": 311 °T
Distance: 1.78 nm
No. 439001 (worked solution)
2Bearing from Green can "3": 328 °T
Distance: 3.79 nm
No. 439002 (worked solution)
3Bearing from Green can "3": 305 °T
Distance: 1.02 nm
No. 439003 (worked solution)
4Bearing from Green can "3": 312 °T
Distance: 3.06 nm
No. 439004 (worked solution)
5Bearing from Tern Island tower: 143 °T
Distance: 1.58 nm
No. 439005 (worked solution)
6Bearing from Green can "3": 085 °T
Distance: 1.34 nm
No. 439006 (worked solution)
7Bearing from Green can "3": 323 °T
Distance: 2.73 nm
No. 439007 (worked solution)
8Bearing from Red nun "2": 270 °T
Distance: 1.05 nm
No. 439008 (worked solution)