Worksheet 722 · 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 1205 your fix is 266°T, 2.6 nm from Tern Island tower. You steer 213°T at 5.3 kn through the water. At 1250 a new fix puts you 339°T, 1.5 nm from Heron Point Light.

   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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1535 your fix is 065°T, 3.1 nm from Gannet Rock daybeacon. You steer 239°T at 5.6 kn through the water. At 1605 a new fix puts you 074°T, 0.9 nm from Gannet Rock daybeacon.

   Plot the 1605 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 0935 your fix is 029°T, 3.1 nm from Heron Point Light. You steer 322°T at 7.8 kn through the water. At 1005 a new fix puts you 035°T, 2.7 nm from Westfield church spire.

   Plot the 1005 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 0840 your fix is 196°T, 1.7 nm from Tern Island tower. You steer 309°T at 6.0 kn through the water. At 0945 a new fix puts you 022°T, 2.4 nm from Westfield church spire.

   Plot the 0945 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  

5. At 1335 your fix is 041°T, 3.5 nm from Heron Point Light. You steer 188°T at 6.4 kn through the water. At 1405 a new fix puts you 100°T, 1.4 nm from Heron Point Light.

   Plot the 1405 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  

6. At 1515 your fix is 048°T, 3.2 nm from Westfield church spire. You steer 186°T at 8.8 kn through the water. At 1545 a new fix puts you 132°T, 1.8 nm from Westfield church spire.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1600 your fix is 057°T, 3.5 nm from Heron Point Light. You steer 307°T at 6.0 kn through the water. At 1700 a new fix puts you 016°T, 3.4 nm from Westfield church spire.

   Plot the 1700 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  

8. At 0720 your fix is 077°T, 2.2 nm from Westfield church spire. You steer 049°T at 6.0 kn through the water. At 0755 a new fix puts you 322°T, 3.2 nm from Tern Island tower.

   Plot the 0755 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