Worksheet 927 · 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 0850 your fix is 067°T, 4.4 nm from Tern Island tower. You steer 181°T at 5.0 kn through the water. At 0925 a new fix puts you 070°T, 2.9 nm from Gannet Rock daybeacon.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1535 your fix is 353°T, 2.7 nm from Mill stack. You steer 067°T at 5.8 kn through the water. At 1650 a new fix puts you 117°T, 1.7 nm from Gannet Rock daybeacon.

   Plot the 1650 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  

3. At 1220 your fix is 225°T, 2.6 nm from Gannet Rock daybeacon. You steer 315°T at 7.0 kn through the water. At 1330 a new fix puts you 047°T, 3.2 nm from Westfield church spire.

   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 70 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1505 your fix is 251°T, 2.3 nm from Gannet Rock daybeacon. You steer 263°T at 7.4 kn through the water. At 1535 a new fix puts you 076°T, 2.1 nm from Heron Point Light.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1200 your fix is 330°T, 1.8 nm from Mill stack. You steer 350°T at 4.5 kn through the water. At 1305 a new fix puts you 256°T, 2.1 nm from Tern Island tower.

   Plot the 1305 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 65 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 1250 your fix is 074°T, 1.6 nm from Westfield church spire. You steer 096°T at 9.0 kn through the water. At 1345 a new fix puts you 065°T, 0.8 nm from Gannet Rock daybeacon.

   Plot the 1345 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 0855 your fix is 357°T, 3.0 nm from Mill stack. You steer 050°T at 5.0 kn through the water. At 0925 a new fix puts you 276°T, 2.2 nm from Gannet Rock daybeacon.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1130 your fix is 067°T, 4.9 nm from Tern Island tower. You steer 203°T at 4.1 kn through the water. At 1235 a new fix puts you 110°T, 1.7 nm from Gannet Rock daybeacon.

   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 65 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn