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Worksheet 103 · Skill 4

Two-bearing fix

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  1. At 1125 you take two bearings with a hand-bearing compass: Mill stack bears 174°M and Westfield church spire bears 296°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 1055 you take two bearings with a hand-bearing compass: Mill stack bears 194°M and Westfield church spire bears 255°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  

  3. At 0920 you take two bearings with a hand-bearing compass: Westfield church spire bears 256°M and Gannet Rock daybeacon bears 130°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 0815 you take two bearings with a hand-bearing compass: Heron Point Light bears 242°M and Kittle water tank bears 145°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 0915 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 096°M and Heron Point Light bears 194°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 1345 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 109°M and Heron Point Light bears 213°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  

  7. At 1525 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 317°M and Kittle water tank bears 214°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 Bell buoy "HS" to the fix, and the distance.

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

    Bearing from Bell buoy "HS": ________ °T   Distance: ________ nm  

  8. At 0845 you take two bearings with a hand-bearing compass: Mill stack bears 167°M and Gannet Rock daybeacon bears 110°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 "1": 069 °T
Distance: 1.07 nm
No. 103001 (worked solution)
2Bearing from Tern Island tower: 330 °T
Distance: 1.73 nm
No. 103002 (worked solution)
3Bearing from Green can "3": 330 °T
Distance: 2.50 nm
No. 103003 (worked solution)
4Bearing from Green can "3": 068 °T
Distance: 1.10 nm
No. 103004 (worked solution)
5Bearing from Green can "1": 287 °T
Distance: 1.64 nm
No. 103005 (worked solution)
6Bearing from Red nun "2": 325 °T
Distance: 1.46 nm
No. 103006 (worked solution)
7Bearing from Bell buoy "HS": 182 °T
Distance: 5.52 nm
No. 103007 (worked solution)
8Bearing from Red nun "2": 334 °T
Distance: 1.38 nm
No. 103008 (worked solution)