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Worksheet 249 · Skill 4

Two-bearing fix

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  1. At 1455 you take two bearings with a hand-bearing compass: Westfield church spire bears 267°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 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  

  2. At 1610 you take two bearings with a hand-bearing compass: Westfield church spire bears 292°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  

  3. At 1745 you take two bearings with a hand-bearing compass: Westfield church spire bears 269°M and Heron Point Light bears 211°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  

  4. At 0900 you take two bearings with a hand-bearing compass: Heron Point Light bears 222°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 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: Mill stack bears 149°M and Westfield church spire 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 "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  

  6. At 1000 you take two bearings with a hand-bearing compass: Mill stack bears 198°M and Westfield church spire bears 279°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 0915 you take two bearings with a hand-bearing compass: Westfield church spire bears 259°M and Kittle water tank bears 147°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  

  8. At 1710 you take two bearings with a hand-bearing compass: Heron Point Light bears 207°M and Gannet Rock daybeacon bears 096°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  

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 Red nun "2": 342 °T
Distance: 2.15 nm
No. 249001 (worked solution)
2Bearing from Green can "3": 140 °T
Distance: 1.70 nm
No. 249002 (worked solution)
3Bearing from Red nun "2": 341 °T
Distance: 2.02 nm
No. 249003 (worked solution)
4Bearing from Green can "3": 301 °T
Distance: 1.37 nm
No. 249004 (worked solution)
5Bearing from Green can "1": 314 °T
Distance: 3.74 nm
No. 249005 (worked solution)
6Bearing from Green can "3": 072 °T
Distance: 0.89 nm
No. 249006 (worked solution)
7Bearing from Tern Island tower: 288 °T
Distance: 2.05 nm
No. 249007 (worked solution)
8Bearing from Green can "1": 294 °T
Distance: 1.22 nm
No. 249008 (worked solution)