Worksheet 780 · Skill 5

Set and drift

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 0815 your fix is 109°T, 1.9 nm from Westfield church spire. You steer 130°T at 6.4 kn through the water. At 0855 a new fix puts you 354°T, 2.1 nm from Mill stack.

   Plot the 0855 DR, then find the current: set (the true direction the water moved you, from the DR to the fix) and drift (its speed in knots over the 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1350 your fix is 123°T, 1.4 nm from Tern Island tower. You steer 199°T at 8.0 kn through the water. At 1425 a new fix puts you 278°T, 2.3 nm from Kittle water tank.

   Plot the 1425 DR, then find the current: set (the true direction the water moved you, from the DR to the fix) and drift (its speed in knots over the 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 1550 your fix is 004°T, 1.8 nm from Westfield church spire. You steer 084°T at 8.3 kn through the water. At 1630 a new fix puts you 293°T, 2.9 nm from Tern Island tower.

   Plot the 1630 DR, then find the current: set (the true direction the water moved you, from the DR to the fix) and drift (its speed in knots over the 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1210 your fix is 043°T, 3.1 nm from Westfield church spire. You steer 151°T at 5.8 kn through the water. At 1300 a new fix puts you 046°T, 1.6 nm from Heron Point Light.

   Plot the 1300 DR, then find the current: set (the true direction the water moved you, from the DR to the fix) and drift (its speed in knots over the 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 0745 your fix is 209°T, 3.0 nm from Tern Island tower. You steer 067°T at 6.9 kn through the water. At 0825 a new fix puts you 065°T, 2.0 nm from Gannet Rock daybeacon.

   Plot the 0825 DR, then find the current: set (the true direction the water moved you, from the DR to the fix) and drift (its speed in knots over the 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 1030 your fix is 141°T, 3.6 nm from Westfield church spire. You steer 088°T at 6.2 kn through the water. At 1105 a new fix puts you 016°T, 2.6 nm from Mill stack.

   Plot the 1105 DR, then find the current: set (the true direction the water moved you, from the DR to the fix) and drift (its speed in knots over the 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1500 your fix is 305°T, 3.2 nm from Tern Island tower. You steer 084°T at 8.2 kn through the water. At 1540 a new fix puts you 059°T, 4.5 nm from Tern Island tower.

   Plot the 1540 DR, then find the current: set (the true direction the water moved you, from the DR to the fix) and drift (its speed in knots over the 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 0730 your fix is 339°T, 2.6 nm from Mill stack. You steer 349°T at 7.6 kn through the water. At 0820 a new fix puts you 033°T, 3.0 nm from Westfield church spire.

   Plot the 0820 DR, then find the current: set (the true direction the water moved you, from the DR to the fix) and drift (its speed in knots over the 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn