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Worksheet 906 · Skill 4

Two-bearing fix

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  1. At 1015 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 082°M and Westfield church spire bears 325°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 Heron Point Light to the fix, and the distance.

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

    Bearing from Heron Point Light: ________ °T   Distance: ________ nm  

  2. At 0755 you take two bearings with a hand-bearing compass: Mill stack bears 194°M and Westfield church spire bears 282°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 0820 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 110°M and Mill stack bears 197°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 1735 you take two bearings with a hand-bearing compass: Mill stack bears 195°M and Gannet Rock daybeacon bears 117°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  

  5. At 1250 you take two bearings with a hand-bearing compass: Mill stack bears 157°M and Gannet Rock daybeacon bears 087°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 0940 you take two bearings with a hand-bearing compass: Heron Point Light bears 213°M and Mill stack bears 152°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 1330 you take two bearings with a hand-bearing compass: Heron Point Light bears 205°M and Gannet Rock daybeacon bears 099°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 1110 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 138°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  

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 Heron Point Light: 071 °T
Distance: 0.94 nm
No. 906001 (worked solution)
2Bearing from Red nun "2": 064 °T
Distance: 1.96 nm
No. 906002 (worked solution)
3Bearing from Red nun "2": 072 °T
Distance: 2.07 nm
No. 906003 (worked solution)
4Bearing from Tern Island tower: 218 °T
Distance: 1.83 nm
No. 906004 (worked solution)
5Bearing from Red nun "2": 204 °T
Distance: 1.00 nm
No. 906005 (worked solution)
6Bearing from Green can "1": 308 °T
Distance: 1.03 nm
No. 906006 (worked solution)
7Bearing from Green can "1": 308 °T
Distance: 1.36 nm
No. 906007 (worked solution)
8Bearing from Tern Island tower: 168 °T
Distance: 1.17 nm
No. 906008 (worked solution)