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Worksheet 43 · Skill 4

Two-bearing fix

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  1. At 1320 you take two bearings with a hand-bearing compass: Mill stack bears 163°M and Gannet Rock daybeacon bears 102°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 1130 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 311°M and Kittle water tank bears 190°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  

  3. At 1455 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 266°M and Kittle water tank 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 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 1425 you take two bearings with a hand-bearing compass: Heron Point Light bears 236°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  

  5. At 0915 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 134°M and Westfield church spire bears 238°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 1605 you take two bearings with a hand-bearing compass: Westfield church spire bears 264°M and Mill stack bears 187°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 1600 you take two bearings with a hand-bearing compass: Heron Point Light bears 201°M and Gannet Rock daybeacon bears 116°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 1240 you take two bearings with a hand-bearing compass: Westfield church spire bears 246°M and Gannet Rock daybeacon bears 122°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": 306 °T
Distance: 0.81 nm
No. 43001 (worked solution)
2Bearing from Tern Island tower: 137 °T
Distance: 4.82 nm
No. 43002 (worked solution)
3Bearing from Bell buoy "HS": 180 °T
Distance: 3.37 nm
No. 43003 (worked solution)
4Bearing from Red nun "2": 045 °T
Distance: 1.03 nm
No. 43004 (worked solution)
5Bearing from Green can "3": 328 °T
Distance: 3.94 nm
No. 43005 (worked solution)
6Bearing from Green can "3": 357 °T
Distance: 1.77 nm
No. 43006 (worked solution)
7Bearing from Red nun "2": 327 °T
Distance: 2.53 nm
No. 43007 (worked solution)
8Bearing from Red nun "2": 331 °T
Distance: 3.42 nm
No. 43008 (worked solution)