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Worksheet 377 · Skill 4

Two-bearing fix

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  1. At 0805 you take two bearings with a hand-bearing compass: Kittle water tank bears 153°M and Heron Point Light bears 250°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  

  2. At 1000 you take two bearings with a hand-bearing compass: Mill stack bears 151°M and Heron Point Light bears 256°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 1000 you take two bearings with a hand-bearing compass: Kittle water tank bears 212°M and Gannet Rock daybeacon bears 303°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  

  4. At 1255 you take two bearings with a hand-bearing compass: Westfield church spire bears 294°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 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 1310 you take two bearings with a hand-bearing compass: Mill stack bears 178°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 1035 you take two bearings with a hand-bearing compass: Westfield church spire bears 314°M and Gannet Rock daybeacon bears 076°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 1500 you take two bearings with a hand-bearing compass: Westfield church spire bears 301°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 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  

  8. At 1535 you take two bearings with a hand-bearing compass: Mill stack bears 214°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 Gannet Rock daybeacon to the fix, and the distance.

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

    Bearing from Gannet Rock daybeacon: ________ °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 Tern Island tower: 162 °T
Distance: 1.58 nm
No. 377001 (worked solution)
2Bearing from Red nun "2": 203 °T
Distance: 1.40 nm
No. 377002 (worked solution)
3Bearing from Bell buoy "HS": 179 °T
Distance: 4.91 nm
No. 377003 (worked solution)
4Bearing from Red nun "2": 103 °T
Distance: 1.11 nm
No. 377004 (worked solution)
5Bearing from Green can "3": 331 °T
Distance: 2.41 nm
No. 377005 (worked solution)
6Bearing from Green can "1": 154 °T
Distance: 1.38 nm
No. 377006 (worked solution)
7Bearing from Red nun "2": 126 °T
Distance: 2.22 nm
No. 377007 (worked solution)
8Bearing from Gannet Rock daybeacon: 298 °T
Distance: 1.53 nm
No. 377008 (worked solution)