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Worksheet 724 · Skill 4

Two-bearing fix

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  1. At 1655 you take two bearings with a hand-bearing compass: Kittle water tank bears 179°M and Gannet Rock daybeacon bears 305°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 0910 you take two bearings with a hand-bearing compass: Heron Point Light bears 235°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 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 1545 you take two bearings with a hand-bearing compass: Heron Point Light bears 214°M and Gannet Rock daybeacon bears 120°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 0930 you take two bearings with a hand-bearing compass: Mill stack bears 167°M and Westfield church spire bears 268°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 1140 you take two bearings with a hand-bearing compass: Mill stack bears 199°M and Westfield church spire bears 277°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 1420 you take two bearings with a hand-bearing compass: Westfield church spire bears 250°M and Mill stack bears 172°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  

  7. At 1555 you take two bearings with a hand-bearing compass: Heron Point Light bears 269°M and Mill stack bears 219°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  

  8. At 1345 you take two bearings with a hand-bearing compass: Mill stack bears 176°M and Heron Point Light bears 242°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 Tern Island tower: 137 °T
Distance: 4.19 nm
No. 724001 (worked solution)
2Bearing from Red nun "2": 234 °T
Distance: 1.14 nm
No. 724002 (worked solution)
3Bearing from Green can "3": 308 °T
Distance: 2.02 nm
No. 724003 (worked solution)
4Bearing from Red nun "2": 336 °T
Distance: 2.13 nm
No. 724004 (worked solution)
5Bearing from Green can "3": 063 °T
Distance: 1.10 nm
No. 724005 (worked solution)
6Bearing from Green can "3": 320 °T
Distance: 3.06 nm
No. 724006 (worked solution)
7Bearing from Gannet Rock daybeacon: 238 °T
Distance: 2.45 nm
No. 724007 (worked solution)
8Bearing from Green can "3": 223 °T
Distance: 1.21 nm
No. 724008 (worked solution)