Worksheet 482 · 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 1325 your fix is 049°T, 3.0 nm from Heron Point Light. You steer 323°T at 5.2 kn through the water. At 1415 a new fix puts you 055°T, 4.0 nm from Westfield church spire.

   Plot the 1415 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 1125 your fix is 260°T, 3.2 nm from Tern Island tower. You steer 133°T at 5.8 kn through the water. At 1215 a new fix puts you 196°T, 2.3 nm from Tern Island tower.

   Plot the 1215 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  

3. At 0845 your fix is 087°T, 1.7 nm from Heron Point Light. You steer 354°T at 7.5 kn through the water. At 0930 a new fix puts you 061°T, 3.2 nm from Westfield church spire.

   Plot the 0930 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  

4. At 1555 your fix is 066°T, 1.3 nm from Gannet Rock daybeacon. You steer 030°T at 4.2 kn through the water. At 1645 a new fix puts you 080°T, 3.4 nm from Tern Island tower.

   Plot the 1645 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  

5. At 1545 your fix is 116°T, 1.8 nm from Gannet Rock daybeacon. You steer 334°T at 7.0 kn through the water. At 1625 a new fix puts you 092°T, 1.8 nm from Tern Island tower.

   Plot the 1625 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  

6. At 1210 your fix is 066°T, 5.0 nm from Tern Island tower. You steer 204°T at 6.7 kn through the water. At 1250 a new fix puts you 095°T, 1.2 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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 0835 your fix is 308°T, 1.5 nm from Gannet Rock daybeacon. You steer 179°T at 4.5 kn through the water. At 0920 a new fix puts you 278°T, 2.3 nm from Kittle water tank.

   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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 0705 your fix is 230°T, 3.3 nm from Tern Island tower. You steer 104°T at 4.0 kn through the water. At 0835 a new fix puts you 034°T, 2.9 nm from Gannet Rock daybeacon.

   Plot the 0835 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 90 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn