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Worksheet 539 · Skill 4

Two-bearing fix

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  1. At 0815 you take two bearings with a hand-bearing compass: Westfield church spire bears 288°M and Mill stack bears 201°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 1155 you take two bearings with a hand-bearing compass: Mill stack bears 181°M and Heron Point Light bears 240°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 1745 you take two bearings with a hand-bearing compass: Kittle water tank bears 151°M and Mill stack bears 209°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 1125 you take two bearings with a hand-bearing compass: Westfield church spire bears 285°M and Mill stack bears 160°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 1640 you take two bearings with a hand-bearing compass: Mill stack bears 187°M and Gannet Rock daybeacon bears 121°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 1020 you take two bearings with a hand-bearing compass: Heron Point Light bears 252°M and Gannet Rock daybeacon bears 141°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  

  7. At 1000 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 095°M and Heron Point Light bears 174°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 1510 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 130°M and Westfield church spire bears 231°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 "3": 131 °T
Distance: 1.14 nm
No. 539001 (worked solution)
2Bearing from Red nun "2": 063 °T
Distance: 0.86 nm
No. 539002 (worked solution)
3Bearing from Tern Island tower: 173 °T
Distance: 1.34 nm
No. 539003 (worked solution)
4Bearing from Red nun "2": 309 °T
Distance: 1.52 nm
No. 539004 (worked solution)
5Bearing from Red nun "2": 037 °T
Distance: 2.00 nm
No. 539005 (worked solution)
6Bearing from Tern Island tower: 152 °T
Distance: 1.80 nm
No. 539006 (worked solution)
7Bearing from Green can "1": 279 °T
Distance: 2.23 nm
No. 539007 (worked solution)
8Bearing from Green can "3": 318 °T
Distance: 4.39 nm
No. 539008 (worked solution)