Worksheet 737 · 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 0740 your fix is 277°T, 3.7 nm from Tern Island tower. You steer 136°T at 6.1 kn through the water. At 0840 a new fix puts you 043°T, 2.3 nm from Mill stack.

   Plot the 0840 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 1225 your fix is 205°T, 1.5 nm from Gannet Rock daybeacon. You steer 302°T at 8.6 kn through the water. At 1335 a new fix puts you 026°T, 2.1 nm from Westfield church spire.

   Plot the 1335 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 70 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 1050 your fix is 359°T, 2.1 nm from Tern Island tower. You steer 244°T at 4.9 kn through the water. At 1155 a new fix puts you 059°T, 3.4 nm from Westfield church spire.

   Plot the 1155 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  

4. At 1235 your fix is 070°T, 4.8 nm from Tern Island tower. You steer 198°T at 4.2 kn through the water. At 1335 a new fix puts you 093°T, 2.4 nm from Tern Island tower.

   Plot the 1335 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  

5. At 0825 your fix is 207°T, 2.4 nm from Tern Island tower. You steer 062°T at 8.3 kn through the water. At 0900 a new fix puts you 045°T, 2.8 nm from Gannet Rock daybeacon.

   Plot the 0900 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  

6. At 0805 your fix is 170°T, 1.7 nm from Gannet Rock daybeacon. You steer 301°T at 7.3 kn through the water. At 0900 a new fix puts you 038°T, 3.5 nm from Heron Point Light.

   Plot the 0900 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  

7. At 1200 your fix is 062°T, 1.0 nm from Westfield church spire. You steer 061°T at 9.0 kn through the water. At 1235 a new fix puts you 315°T, 3.2 nm from Tern Island tower.

   Plot the 1235 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  

8. At 1215 your fix is 084°T, 2.3 nm from Westfield church spire. You steer 340°T at 4.1 kn through the water. At 1255 a new fix puts you 025°T, 3.8 nm from Westfield church spire.

   Plot the 1255 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