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Worksheet 987 · Skill 4

Two-bearing fix

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  1. At 0935 you take two bearings with a hand-bearing compass: Westfield church spire bears 242°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  

  2. At 1735 you take two bearings with a hand-bearing compass: Mill stack bears 201°M and Heron Point Light bears 265°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 1705 you take two bearings with a hand-bearing compass: Mill stack bears 177°M and Westfield church spire bears 243°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 1205 you take two bearings with a hand-bearing compass: Mill stack bears 199°M and Westfield church spire bears 283°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 1755 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 129°M and Heron Point Light bears 200°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 1720 you take two bearings with a hand-bearing compass: Westfield church spire bears 231°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  

  7. At 1005 you take two bearings with a hand-bearing compass: Heron Point Light bears 181°M and Westfield church spire bears 291°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 1000 you take two bearings with a hand-bearing compass: Westfield church spire bears 283°M and Mill stack bears 181°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 Red nun "2": 327 °T
Distance: 3.61 nm
No. 987001 (worked solution)
2Bearing from Green can "3": 165 °T
Distance: 2.07 nm
No. 987002 (worked solution)
3Bearing from Green can "3": 336 °T
Distance: 3.60 nm
No. 987003 (worked solution)
4Bearing from Green can "3": 102 °T
Distance: 0.86 nm
No. 987004 (worked solution)
5Bearing from Green can "3": 319 °T
Distance: 3.67 nm
No. 987005 (worked solution)
6Bearing from Red nun "2": 325 °T
Distance: 4.14 nm
No. 987006 (worked solution)
7Bearing from Green can "1": 307 °T
Distance: 2.66 nm
No. 987007 (worked solution)
8Bearing from Red nun "2": 040 °T
Distance: 1.13 nm
No. 987008 (worked solution)