Worksheet 10 · 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 1200 your fix is 070°T, 3.7 nm from Westfield church spire. You steer 181°T at 4.3 kn through the water. At 1310 a new fix puts you 342°T, 1.0 nm from Heron Point Light.

   Plot the 1310 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 70 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 0750 your fix is 251°T, 1.0 nm from Gannet Rock daybeacon. You steer 269°T at 6.3 kn through the water. At 0845 a new fix puts you 037°T, 1.2 nm from Heron Point Light.

   Plot the 0845 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  

3. At 0935 your fix is 025°T, 3.0 nm from Westfield church spire. You steer 074°T at 5.3 kn through the water. At 1010 a new fix puts you 303°T, 3.7 nm from Tern Island tower.

   Plot the 1010 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  

4. At 0915 your fix is 260°T, 3.1 nm from Gannet Rock daybeacon. You steer 135°T at 5.8 kn through the water. At 0945 a new fix puts you 287°T, 1.8 nm from Kittle water tank.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 0950 your fix is 073°T, 1.9 nm from Gannet Rock daybeacon. You steer 319°T at 5.3 kn through the water. At 1025 a new fix puts you 023°T, 2.1 nm from Gannet Rock daybeacon.

   Plot the 1025 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 0840 your fix is 245°T, 2.2 nm from Gannet Rock daybeacon. You steer 317°T at 6.6 kn through the water. At 0940 a new fix puts you 045°T, 1.8 nm from Westfield church spire.

   Plot the 0940 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  

7. At 1025 your fix is 073°T, 2.5 nm from Westfield church spire. You steer 151°T at 4.3 kn through the water. At 1110 a new fix puts you 356°T, 2.6 nm from Mill stack.

   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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1400 your fix is 250°T, 3.7 nm from Tern Island tower. You steer 156°T at 5.9 kn through the water. At 1430 a new fix puts you 343°T, 2.6 nm from Mill stack.

   Plot the 1430 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