Worksheet 54 · 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 1440 your fix is 109°T, 1.5 nm from Gannet Rock daybeacon. You steer 348°T at 4.2 kn through the water. At 1530 a new fix puts you 048°T, 3.7 nm from Tern Island tower.

   Plot the 1530 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  

2. At 1550 your fix is 073°T, 2.0 nm from Westfield church spire. You steer 304°T at 4.9 kn through the water. At 1620 a new fix puts you 004°T, 2.7 nm from Westfield church spire.

   Plot the 1620 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  

3. At 0950 your fix is 031°T, 3.1 nm from Westfield church spire. You steer 130°T at 6.0 kn through the water. At 1110 a new fix puts you 277°T, 2.3 nm from Gannet Rock daybeacon.

   Plot the 1110 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 80 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1205 your fix is 068°T, 3.1 nm from Tern Island tower. You steer 175°T at 4.5 kn through the water. At 1250 a new fix puts you 011°T, 1.8 nm from Gannet Rock daybeacon.

   Plot the 1250 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  

5. At 1020 your fix is 024°T, 2.9 nm from Gannet Rock daybeacon. You steer 190°T at 5.2 kn through the water. At 1105 a new fix puts you 131°T, 1.5 nm from Gannet Rock daybeacon.

   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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 0805 your fix is 020°T, 2.2 nm from Mill stack. You steer 309°T at 8.0 kn through the water. At 0900 a new fix puts you 074°T, 2.7 nm from Westfield church spire.

   Plot the 0900 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  

7. At 1130 your fix is 199°T, 1.9 nm from Tern Island tower. You steer 293°T at 7.3 kn through the water. At 1220 a new fix puts you 002°T, 3.5 nm from Westfield church spire.

   Plot the 1220 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 0845 your fix is 194°T, 1.5 nm from Tern Island tower. You steer 288°T at 4.5 kn through the water. At 0925 a new fix puts you 022°T, 3.0 nm from Heron Point Light.

   Plot the 0925 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