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Worksheet 275 · Skill 4

Two-bearing fix

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  1. At 1605 you take two bearings with a hand-bearing compass: Mill stack bears 184°M and Gannet Rock daybeacon bears 076°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 0855 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 307°M and Kittle water tank bears 211°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  

  3. At 1305 you take two bearings with a hand-bearing compass: Heron Point Light bears 202°M and Gannet Rock daybeacon bears 110°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 1115 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 109°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 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 1650 you take two bearings with a hand-bearing compass: Heron Point Light bears 210°M and Gannet Rock daybeacon bears 103°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 0900 you take two bearings with a hand-bearing compass: Kittle water tank bears 141°M and Heron Point Light 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 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  

  7. At 1410 you take two bearings with a hand-bearing compass: Kittle water tank bears 195°M and Gannet Rock daybeacon bears 257°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  

  8. At 1140 you take two bearings with a hand-bearing compass: Westfield church spire bears 295°M and Mill stack bears 166°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 Red nun "2": 143 °T
Distance: 1.79 nm
No. 275001 (worked solution)
2Bearing from Bell buoy "HS": 180 °T
Distance: 5.06 nm
No. 275002 (worked solution)
3Bearing from Red nun "2": 314 °T
Distance: 2.07 nm
No. 275003 (worked solution)
4Bearing from Red nun "2": 351 °T
Distance: 1.07 nm
No. 275004 (worked solution)
5Bearing from Green can "1": 331 °T
Distance: 1.41 nm
No. 275005 (worked solution)
6Bearing from Gannet Rock daybeacon: 216 °T
Distance: 1.20 nm
No. 275006 (worked solution)
7Bearing from Bell buoy "HS": 185 °T
Distance: 3.11 nm
No. 275007 (worked solution)
8Bearing from Green can "3": 242 °T
Distance: 1.75 nm
No. 275008 (worked solution)