Plotroom

PREVIEWFree during preview: checkout has not opened, so skills 5 to 8, worksheets and CSV cost nothing yet. Price when it opens: Plot Pass $1.95/month or $19.50/year.

Worksheet 642 · Skill 4

Two-bearing fix

Next sheet

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 1340 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 122°M and Mill stack bears 198°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 1345 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 125°M and Westfield church spire bears 231°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 0950 you take two bearings with a hand-bearing compass: Kittle water tank bears 197°M and Gannet Rock daybeacon bears 314°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 0700 you take two bearings with a hand-bearing compass: Heron Point Light bears 251°M and Gannet Rock daybeacon bears 178°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  

  5. At 1645 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 065°M and Westfield church spire bears 295°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 1350 you take two bearings with a hand-bearing compass: Westfield church spire bears 262°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 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 1625 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 122°M and Mill stack bears 208°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  

  8. At 1520 you take two bearings with a hand-bearing compass: Kittle water tank bears 231°M and Gannet Rock daybeacon bears 308°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  

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": 069 °T
Distance: 0.92 nm
No. 642001 (worked solution)
2Bearing from Red nun "2": 330 °T
Distance: 4.23 nm
No. 642002 (worked solution)
3Bearing from Bell buoy "HS": 186 °T
Distance: 5.11 nm
No. 642003 (worked solution)
4Bearing from Tern Island tower: 125 °T
Distance: 1.92 nm
No. 642004 (worked solution)
5Bearing from Green can "3": 136 °T
Distance: 2.68 nm
No. 642005 (worked solution)
6Bearing from Green can "3": 337 °T
Distance: 1.95 nm
No. 642006 (worked solution)
7Bearing from Tern Island tower: 182 °T
Distance: 1.64 nm
No. 642007 (worked solution)
8Bearing from Bell buoy "HS": 175 °T
Distance: 5.46 nm
No. 642008 (worked solution)