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Worksheet 193 · Skill 4

Two-bearing fix

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  1. At 1125 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 061°M and Westfield church spire bears 304°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 Mill stack to the fix, and the distance.

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

    Bearing from Mill stack: ________ °T   Distance: ________ nm  

  2. At 1520 you take two bearings with a hand-bearing compass: Mill stack bears 175°M and Heron Point Light bears 270°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  

  3. At 1235 you take two bearings with a hand-bearing compass: Mill stack bears 209°M and Westfield church spire bears 296°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 1755 you take two bearings with a hand-bearing compass: Westfield church spire bears 273°M and Heron Point Light bears 214°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 1000 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 077°M and Westfield church spire bears 309°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  

  6. At 1105 you take two bearings with a hand-bearing compass: Mill stack bears 162°M and Westfield church spire bears 253°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 1640 you take two bearings with a hand-bearing compass: Mill stack bears 196°M and Heron Point Light bears 259°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  

  8. At 1310 you take two bearings with a hand-bearing compass: Westfield church spire bears 256°M and Mill stack bears 171°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 Mill stack: 029 °T
Distance: 2.05 nm
No. 193001 (worked solution)
2Bearing from Green can "1": 127 °T
Distance: 1.69 nm
No. 193002 (worked solution)
3Bearing from Green can "3": 150 °T
Distance: 2.06 nm
No. 193003 (worked solution)
4Bearing from Red nun "2": 342 °T
Distance: 1.75 nm
No. 193004 (worked solution)
5Bearing from Green can "1": 133 °T
Distance: 1.45 nm
No. 193005 (worked solution)
6Bearing from Red nun "2": 326 °T
Distance: 3.07 nm
No. 193006 (worked solution)
7Bearing from Green can "3": 166 °T
Distance: 1.62 nm
No. 193007 (worked solution)
8Bearing from Green can "3": 314 °T
Distance: 2.73 nm
No. 193008 (worked solution)