Worksheet 862 · 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 0930 your fix is 002°T, 2.3 nm from Westfield church spire. You steer 112°T at 4.5 kn through the water. At 1030 a new fix puts you 037°T, 2.7 nm from Heron Point Light.

   Plot the 1030 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  

2. At 1205 your fix is 307°T, 4.1 nm from Tern Island tower. You steer 157°T at 8.3 kn through the water. At 1245 a new fix puts you 219°T, 2.0 nm from Tern Island tower.

   Plot the 1245 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  

3. At 0850 your fix is 344°T, 1.9 nm from Heron Point Light. You steer 113°T at 4.9 kn through the water. At 0925 a new fix puts you 049°T, 1.8 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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1505 your fix is 238°T, 3.4 nm from Tern Island tower. You steer 150°T at 4.6 kn through the water. At 1545 a new fix puts you 331°T, 2.4 nm from Mill stack.

   Plot the 1545 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  

5. At 1230 your fix is 038°T, 4.2 nm from Westfield church spire. You steer 160°T at 6.1 kn through the water. At 1310 a new fix puts you 030°T, 3.0 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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 1325 your fix is 309°T, 2.1 nm from Tern Island tower. You steer 224°T at 4.0 kn through the water. At 1410 a new fix puts you 022°T, 3.0 nm from Heron Point Light.

   Plot the 1410 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  

7. At 1440 your fix is 038°T, 2.9 nm from Tern Island tower. You steer 170°T at 8.0 kn through the water. At 1520 a new fix puts you 042°T, 1.3 nm from Gannet Rock daybeacon.

   Plot the 1520 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  

8. At 1130 your fix is 044°T, 3.6 nm from Gannet Rock daybeacon. You steer 241°T at 5.5 kn through the water. At 1215 a new fix puts you 155°T, 2.7 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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn