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Worksheet 30 · Skill 4

Two-bearing fix

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  1. At 1330 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 123°M and Mill stack bears 179°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  

  2. At 0940 you take two bearings with a hand-bearing compass: Mill stack bears 160°M and Gannet Rock daybeacon bears 099°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 1110 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 083°M and Mill stack bears 150°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  

  4. At 1650 you take two bearings with a hand-bearing compass: Westfield church spire bears 243°M and Mill stack bears 158°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 1715 you take two bearings with a hand-bearing compass: Mill stack bears 169°M and Westfield church spire bears 272°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  

  6. At 1725 you take two bearings with a hand-bearing compass: Westfield church spire bears 285°M and Heron Point Light bears 213°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 1800 you take two bearings with a hand-bearing compass: Heron Point Light bears 222°M and Gannet Rock daybeacon bears 128°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 1620 you take two bearings with a hand-bearing compass: Mill stack bears 216°M and Kittle water tank 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 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  

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 Green can "3": 324 °T
Distance: 1.56 nm
No. 30001 (worked solution)
2Bearing from Red nun "2": 284 °T
Distance: 0.81 nm
No. 30002 (worked solution)
3Bearing from Red nun "2": 203 °T
Distance: 1.46 nm
No. 30003 (worked solution)
4Bearing from Red nun "2": 319 °T
Distance: 3.59 nm
No. 30004 (worked solution)
5Bearing from Red nun "2": 342 °T
Distance: 1.82 nm
No. 30005 (worked solution)
6Bearing from Red nun "2": 314 °T
Distance: 1.35 nm
No. 30006 (worked solution)
7Bearing from Green can "3": 339 °T
Distance: 1.66 nm
No. 30007 (worked solution)
8Bearing from Tern Island tower: 140 °T
Distance: 1.53 nm
No. 30008 (worked solution)