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Worksheet 471 · Skill 4

Two-bearing fix

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  1. At 1010 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 122°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 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 0950 you take two bearings with a hand-bearing compass: Westfield church spire bears 293°M and Mill stack bears 185°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 1725 you take two bearings with a hand-bearing compass: Westfield church spire bears 262°M and Mill stack bears 164°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 1000 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 095°M and Westfield church spire bears 331°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  

  5. At 1410 you take two bearings with a hand-bearing compass: Mill stack bears 172°M and Westfield church spire bears 257°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  

  6. At 0940 you take two bearings with a hand-bearing compass: Heron Point Light bears 242°M and Mill stack bears 192°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 0940 you take two bearings with a hand-bearing compass: Westfield church spire bears 257°M and Heron Point Light bears 179°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 1645 you take two bearings with a hand-bearing compass: Heron Point Light bears 218°M and Gannet Rock daybeacon bears 132°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 Red nun "2": 324 °T
Distance: 4.13 nm
No. 471001 (worked solution)
2Bearing from Green can "3": 192 °T
Distance: 1.07 nm
No. 471002 (worked solution)
3Bearing from Red nun "2": 329 °T
Distance: 2.56 nm
No. 471003 (worked solution)
4Bearing from Heron Point Light: 338 °T
Distance: 1.85 nm
No. 471004 (worked solution)
5Bearing from Green can "3": 316 °T
Distance: 2.62 nm
No. 471005 (worked solution)
6Bearing from Red nun "2": 063 °T
Distance: 1.78 nm
No. 471006 (worked solution)
7Bearing from Green can "1": 317 °T
Distance: 3.42 nm
No. 471007 (worked solution)
8Bearing from Green can "3": 341 °T
Distance: 2.18 nm
No. 471008 (worked solution)