Worksheet 188 · 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 0735 your fix is 353°T, 2.1 nm from Heron Point Light. You steer 097°T at 8.1 kn through the water. At 0820 a new fix puts you 227°T, 2.2 nm from Gannet Rock daybeacon.

   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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1120 your fix is 021°T, 2.4 nm from Heron Point Light. You steer 051°T at 5.2 kn through the water. At 1200 a new fix puts you 287°T, 1.2 nm from Tern Island tower.

   Plot the 1200 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  

3. At 1450 your fix is 243°T, 0.9 nm from Gannet Rock daybeacon. You steer 279°T at 7.4 kn through the water. At 1520 a new fix puts you 227°T, 3.0 nm from Tern Island tower.

   Plot the 1520 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  

4. At 0925 your fix is 283°T, 2.9 nm from Tern Island tower. You steer 169°T at 4.1 kn through the water. At 1000 a new fix puts you 244°T, 2.7 nm from Tern Island tower.

   Plot the 1000 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  

5. At 1255 your fix is 038°T, 4.5 nm from Gannet Rock daybeacon. You steer 290°T at 5.4 kn through the water. At 1330 a new fix puts you 053°T, 2.7 nm from Tern Island tower.

   Plot the 1330 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  

6. At 1155 your fix is 038°T, 3.2 nm from Heron Point Light. You steer 036°T at 5.2 kn through the water. At 1235 a new fix puts you 314°T, 2.9 nm from Tern Island tower.

   Plot the 1235 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  

7. At 0715 your fix is 310°T, 2.9 nm from Tern Island tower. You steer 248°T at 5.0 kn through the water. At 0805 a new fix puts you 056°T, 3.1 nm from Westfield church spire.

   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 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1320 your fix is 358°T, 3.1 nm from Mill stack. You steer 276°T at 4.1 kn through the water. At 1355 a new fix puts you 025°T, 2.5 nm from Heron Point Light.

   Plot the 1355 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