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Worksheet 241 · Skill 4

Two-bearing fix

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  1. At 1725 you take two bearings with a hand-bearing compass: Mill stack bears 178°M and Heron Point Light bears 268°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 0820 you take two bearings with a hand-bearing compass: Westfield church spire bears 259°M and Mill stack bears 161°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  

  3. At 0825 you take two bearings with a hand-bearing compass: Kittle water tank bears 180°M and Gannet Rock daybeacon 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 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 0745 you take two bearings with a hand-bearing compass: Mill stack bears 179°M and Gannet Rock daybeacon bears 107°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  

  5. At 0815 you take two bearings with a hand-bearing compass: Westfield church spire bears 302°M and Mill stack bears 190°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  

  6. At 1335 you take two bearings with a hand-bearing compass: Heron Point Light bears 211°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 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 0905 you take two bearings with a hand-bearing compass: Heron Point Light bears 177°M and Gannet Rock daybeacon bears 092°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  

  8. At 1300 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 118°M and Heron Point Light bears 246°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": 121 °T
Distance: 1.70 nm
No. 241001 (worked solution)
2Bearing from Red nun "2": 323 °T
Distance: 2.82 nm
No. 241002 (worked solution)
3Bearing from Tern Island tower: 123 °T
Distance: 3.29 nm
No. 241003 (worked solution)
4Bearing from Red nun "2": 038 °T
Distance: 0.94 nm
No. 241004 (worked solution)
5Bearing from Red nun "2": 133 °T
Distance: 1.81 nm
No. 241005 (worked solution)
6Bearing from Green can "1": 327 °T
Distance: 1.28 nm
No. 241006 (worked solution)
7Bearing from Green can "1": 269 °T
Distance: 2.04 nm
No. 241007 (worked solution)
8Bearing from Green can "3": 090 °T
Distance: 1.14 nm
No. 241008 (worked solution)