Worksheet 116 · 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 0905 your fix is 061°T, 2.4 nm from Heron Point Light. You steer 090°T at 4.7 kn through the water. At 1020 a new fix puts you 328°T, 1.2 nm from Gannet Rock daybeacon.

   Plot the 1020 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 75 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1225 your fix is 123°T, 1.9 nm from Westfield church spire. You steer 346°T at 8.3 kn through the water. At 1300 a new fix puts you 016°T, 3.5 nm from Westfield church spire.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 0720 your fix is 048°T, 3.8 nm from Westfield church spire. You steer 090°T at 5.0 kn through the water. At 0805 a new fix puts you 304°T, 2.2 nm from Tern Island tower.

   Plot the 0805 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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 0955 your fix is 217°T, 3.4 nm from Tern Island tower. You steer 059°T at 7.4 kn through the water. At 1050 a new fix puts you 033°T, 3.0 nm from Gannet Rock daybeacon.

   Plot the 1050 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 55 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1435 your fix is 015°T, 2.1 nm from Heron Point Light. You steer 109°T at 5.9 kn through the water. At 1535 a new fix puts you 318°T, 1.2 nm from Kittle water tank.

   Plot the 1535 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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 0705 your fix is 260°T, 2.8 nm from Tern Island tower. You steer 312°T at 4.1 kn through the water. At 0755 a new fix puts you 032°T, 3.0 nm from Westfield church spire.

   Plot the 0755 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  

7. At 0845 your fix is 156°T, 1.4 nm from Tern Island tower. You steer 243°T at 4.7 kn through the water. At 0945 a new fix puts you 047°T, 1.6 nm from Heron Point Light.

   Plot the 0945 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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1320 your fix is 258°T, 3.3 nm from Tern Island tower. You steer 303°T at 7.0 kn through the water. At 1350 a new fix puts you 038°T, 1.9 nm from Westfield church spire.

   Plot the 1350 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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn