Worksheet 467 · Skill 3

Dead reckoning

Print this worksheet 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 1150 you fix your position 352°T, 2.4 nm from Mill stack. You steer 091°T at 8.6 kn until 1200, then 318°T at 9.0 kn until 1235.

   Give the 1235 DR position as the true bearing FROM Westfield church spire to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

   Tolerance: 2° and 0.15 nm (or 4 % of the distance).

   Bearing from Westfield church spire: ________ °T   Distance: ________ nm  

2. At 1110 you fix your position 035°T, 2.8 nm from Gannet Rock daybeacon. You steer 251°T at 5.5 kn until 1155, then 308°T at 9.9 kn until 1205.

   Give the 1205 DR position as the true bearing FROM Tern Island tower to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

   Tolerance: 2° and 0.15 nm (or 4 % of the distance).

   Bearing from Tern Island tower: ________ °T   Distance: ________ nm  

3. At 1415 you fix your position 036°T, 1.9 nm from Westfield church spire. You steer 116°T at 8.4 kn until 1440, then 154°T at 5.7 kn until 1520.

   Give the 1520 DR position as the true bearing FROM Mill stack to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

   Tolerance: 2° and 0.15 nm (or 4 % of the distance).

   Bearing from Mill stack: ________ °T   Distance: ________ nm  

4. At 0710 you fix your position 243°T, 2.4 nm from Gannet Rock daybeacon. You steer 090°T at 4.6 kn until 0745, then 200°T at 4.2 kn until 0755.

   Give the 0755 DR position as the true bearing FROM Kittle water tank to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

   Tolerance: 2° and 0.15 nm (or 4 % of the distance).

   Bearing from Kittle water tank: ________ °T   Distance: ________ nm  

5. At 1255 you fix your position 033°T, 1.8 nm from Heron Point Light. You steer 074°T at 6.3 kn until 1320, then 013°T at 5.1 kn until 1335.

   Give the 1335 DR position as the true bearing FROM Tern Island tower to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

   Tolerance: 2° and 0.15 nm (or 4 % of the distance).

   Bearing from Tern Island tower: ________ °T   Distance: ________ nm  

6. At 1305 you fix your position 055°T, 2.8 nm from Westfield church spire. You steer 280°T at 7.2 kn until 1315, then 100°T at 4.6 kn until 1345.

   Give the 1345 DR position as the true bearing FROM Westfield church spire to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

   Tolerance: 2° and 0.15 nm (or 4 % of the distance).

   Bearing from Westfield church spire: ________ °T   Distance: ________ nm  

7. At 1015 you fix your position 213°T, 2.1 nm from Tern Island tower. You steer 354°T at 6.9 kn until 1045, then 271°T at 4.6 kn until 1110.

   Give the 1110 DR position as the true bearing FROM Tern Island tower to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

   Tolerance: 2° and 0.15 nm (or 4 % of the distance).

   Bearing from Tern Island tower: ________ °T   Distance: ________ nm  

8. At 0745 you fix your position 005°T, 1.2 nm from Westfield church spire. You steer 127°T at 4.0 kn until 0825, then 044°T at 7.2 kn until 0905.

   Give the 0905 DR position as the true bearing FROM Tern Island tower to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

   Tolerance: 2° and 0.15 nm (or 4 % of the distance).

   Bearing from Tern Island tower: ________ °T   Distance: ________ nm