Worksheet 83 · 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 1210 your fix is 116°T, 1.5 nm from Gannet Rock daybeacon. You steer 239°T at 4.4 kn through the water. At 1305 a new fix puts you 289°T, 2.4 nm from Kittle water tank.

   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 55 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1410 your fix is 031°T, 1.9 nm from Heron Point Light. You steer 114°T at 4.9 kn through the water. At 1440 a new fix puts you 066°T, 2.3 nm from Heron Point Light.

   Plot the 1440 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 0750 your fix is 222°T, 3.3 nm from Tern Island tower. You steer 109°T at 6.3 kn through the water. At 0845 a new fix puts you 151°T, 2.6 nm from Gannet Rock daybeacon.

   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  

4. At 1555 your fix is 245°T, 3.4 nm from Tern Island tower. You steer 304°T at 6.0 kn through the water. At 1640 a new fix puts you 047°T, 1.0 nm from Westfield church spire.

   Plot the 1640 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 0705 your fix is 014°T, 3.5 nm from Westfield church spire. You steer 179°T at 4.5 kn through the water. At 0810 a new fix puts you 059°T, 1.5 nm from Westfield church spire.

   Plot the 0810 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 0830 your fix is 049°T, 3.4 nm from Heron Point Light. You steer 325°T at 5.3 kn through the water. At 0920 a new fix puts you 020°T, 3.0 nm from Westfield church spire.

   Plot the 0920 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 1340 your fix is 039°T, 3.2 nm from Tern Island tower. You steer 172°T at 6.5 kn through the water. At 1435 a new fix puts you 150°T, 1.0 nm from Gannet Rock daybeacon.

   Plot the 1435 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  

8. At 1535 your fix is 349°T, 2.3 nm from Mill stack. You steer 292°T at 4.3 kn through the water. At 1610 a new fix puts you 144°T, 3.3 nm from Westfield church spire.

   Plot the 1610 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