Worksheet 76 · 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 1315 your fix is 331°T, 2.7 nm from Kittle water tank. You steer 294°T at 4.7 kn through the water. At 1355 a new fix puts you 285°T, 1.4 nm from Gannet Rock daybeacon.

   Plot the 1355 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  

2. At 0715 your fix is 087°T, 2.7 nm from Gannet Rock daybeacon. You steer 339°T at 7.0 kn through the water. At 0750 a new fix puts you 069°T, 3.8 nm from Tern Island tower.

   Plot the 0750 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  

3. At 1200 your fix is 004°T, 1.7 nm from Mill stack. You steer 354°T at 7.4 kn through the water. At 1255 a new fix puts you 304°T, 2.9 nm from Tern Island tower.

   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 55 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1355 your fix is 052°T, 3.0 nm from Gannet Rock daybeacon. You steer 186°T at 5.3 kn through the water. At 1435 a new fix puts you 092°T, 2.6 nm from Gannet Rock daybeacon.

   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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1530 your fix is 285°T, 3.2 nm from Tern Island tower. You steer 162°T at 4.4 kn through the water. At 1635 a new fix puts you 019°T, 1.2 nm from Mill stack.

   Plot the 1635 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  

6. At 1005 your fix is 043°T, 3.6 nm from Westfield church spire. You steer 121°T at 8.7 kn through the water. At 1055 a new fix puts you 218°T, 2.0 nm from Gannet Rock daybeacon.

   Plot the 1055 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  

7. At 1255 your fix is 082°T, 2.0 nm from Westfield church spire. You steer 064°T at 7.9 kn through the water. At 1325 a new fix puts you 284°T, 2.1 nm from Tern Island tower.

   Plot the 1325 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  

8. At 1530 your fix is 018°T, 1.9 nm from Tern Island tower. You steer 255°T at 7.6 kn through the water. At 1610 a new fix puts you 062°T, 1.7 nm from Westfield church spire.

   Plot the 1610 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