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Worksheet 517 · Skill 4

Two-bearing fix

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Plot Pass worksheet. Plot Pass $1.95/month or $19.50/year · Free during preview. Plotroom · cedarpointmarina.net · invented chart, not for navigation.

  1. At 1710 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 132°M and Mill stack bears 215°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 0835 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 121°M and Mill stack bears 174°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  

  3. At 1010 you take two bearings with a hand-bearing compass: Westfield church spire bears 296°M and Mill stack bears 210°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 1545 you take two bearings with a hand-bearing compass: Kittle water tank bears 154°M and Mill stack bears 220°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  

  5. At 1710 you take two bearings with a hand-bearing compass: Heron Point Light bears 209°M and Westfield church spire 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  

  6. At 1450 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 115°M and Heron Point Light bears 216°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 0845 you take two bearings with a hand-bearing compass: Heron Point Light bears 252°M and Kittle water tank bears 142°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 0705 you take two bearings with a hand-bearing compass: Mill stack bears 206°M and Kittle water tank bears 148°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 Tern Island tower: 160 °T
Distance: 1.78 nm
No. 517001 (worked solution)
2Bearing from Green can "3": 312 °T
Distance: 1.97 nm
No. 517002 (worked solution)
3Bearing from Green can "3": 149 °T
Distance: 2.11 nm
No. 517003 (worked solution)
4Bearing from Gannet Rock daybeacon: 300 °T
Distance: 1.01 nm
No. 517004 (worked solution)
5Bearing from Green can "3": 313 °T
Distance: 2.52 nm
No. 517005 (worked solution)
6Bearing from Red nun "2": 348 °T
Distance: 1.72 nm
No. 517006 (worked solution)
7Bearing from Green can "3": 108 °T
Distance: 1.56 nm
No. 517007 (worked solution)
8Bearing from Tern Island tower: 186 °T
Distance: 1.38 nm
No. 517008 (worked solution)