Worksheet 706 · 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 1305 you fix your position 021°T, 2.5 nm from Mill stack. You steer 078°T at 4.7 kn until 1330, then 266°T at 8.7 kn until 1405.

   Give the 1405 DR position as the true bearing FROM Heron Point Light 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 Heron Point Light: ________ °T   Distance: ________ nm  

2. At 1555 you fix your position 262°T, 2.6 nm from Tern Island tower. You steer 171°T at 10.0 kn until 1620, then 304°T at 5.4 kn until 1630.

   Give the 1630 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  

3. At 1320 you fix your position 041°T, 2.3 nm from Westfield church spire. You steer 249°T at 7.0 kn until 1330, then 035°T at 5.6 kn until 1340.

   Give the 1340 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  

4. At 0755 you fix your position 224°T, 2.9 nm from Tern Island tower. You steer 348°T at 6.4 kn until 0815, then 296°T at 8.2 kn until 0825.

   Give the 0825 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  

5. At 1115 you fix your position 048°T, 4.4 nm from Westfield church spire. You steer 247°T at 8.0 kn until 1125, then 140°T at 7.7 kn until 1155.

   Give the 1155 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 1515 you fix your position 060°T, 2.2 nm from Heron Point Light. You steer 086°T at 5.5 kn until 1540, then 291°T at 7.8 kn until 1610.

   Give the 1610 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 0710 you fix your position 265°T, 2.9 nm from Gannet Rock daybeacon. You steer 092°T at 5.4 kn until 0725, then 051°T at 4.6 kn until 0805.

   Give the 0805 DR position as the true bearing FROM Gannet Rock daybeacon 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 Gannet Rock daybeacon: ________ °T   Distance: ________ nm  

8. At 0835 you fix your position 037°T, 2.5 nm from Heron Point Light. You steer 319°T at 6.9 kn until 0855, then 090°T at 5.7 kn until 0940.

   Give the 0940 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