Worksheet 526 · 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 026°T, 2.1 nm from Heron Point Light. You steer 101°T at 7.5 kn through the water. At 1245 a new fix puts you 279°T, 1.5 nm from Gannet Rock daybeacon.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1335 your fix is 168°T, 1.5 nm from Gannet Rock daybeacon. You steer 280°T at 6.6 kn through the water. At 1435 a new fix puts you 036°T, 1.4 nm from Heron Point Light.

   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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 1320 your fix is 079°T, 3.1 nm from Westfield church spire. You steer 311°T at 6.6 kn through the water. At 1350 a new fix puts you 003°T, 2.8 nm from Westfield church spire.

   Plot the 1350 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  

4. At 1035 your fix is 342°T, 2.0 nm from Tern Island tower. You steer 121°T at 6.3 kn through the water. At 1105 a new fix puts you 082°T, 2.8 nm from Tern Island tower.

   Plot the 1105 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 1155 your fix is 004°T, 2.1 nm from Westfield church spire. You steer 108°T at 7.8 kn through the water. At 1320 a new fix puts you 188°T, 1.6 nm from Gannet Rock daybeacon.

   Plot the 1320 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 85 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 0740 your fix is 267°T, 2.1 nm from Gannet Rock daybeacon. You steer 058°T at 8.1 kn through the water. At 0820 a new fix puts you 037°T, 3.5 nm from Gannet Rock daybeacon.

   Plot the 0820 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 1135 your fix is 356°T, 1.6 nm from Tern Island tower. You steer 229°T at 5.1 kn through the water. At 1215 a new fix puts you 273°T, 2.5 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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1350 your fix is 044°T, 3.1 nm from Westfield church spire. You steer 094°T at 5.9 kn through the water. At 1425 a new fix puts you 331°T, 2.1 nm from Tern Island tower.

   Plot the 1425 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