Worksheet 616 · 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 1525 your fix is 021°T, 1.8 nm from Kittle water tank. You steer 327°T at 6.0 kn through the water. At 1600 a new fix puts you 108°T, 1.6 nm from Tern Island tower.

   Plot the 1600 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 1000 your fix is 305°T, 3.7 nm from Mill stack. You steer 351°T at 4.4 kn through the water. At 1120 a new fix puts you 052°T, 3.7 nm from Westfield church spire.

   Plot the 1120 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 80 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 1315 your fix is 024°T, 1.1 nm from Gannet Rock daybeacon. You steer 038°T at 7.6 kn through the water. At 1345 a new fix puts you 065°T, 4.5 nm from Tern Island tower.

   Plot the 1345 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 1150 your fix is 019°T, 1.9 nm from Westfield church spire. You steer 105°T at 4.3 kn through the water. At 1225 a new fix puts you 059°T, 3.2 nm from Westfield church spire.

   Plot the 1225 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  

5. At 1135 your fix is 042°T, 1.4 nm from Kittle water tank. You steer 357°T at 7.3 kn through the water. At 1205 a new fix puts you 035°T, 2.0 nm from Gannet Rock daybeacon.

   Plot the 1205 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 1330 your fix is 057°T, 3.3 nm from Westfield church spire. You steer 097°T at 4.2 kn through the water. At 1410 a new fix puts you 248°T, 1.4 nm from Tern Island tower.

   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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 0800 your fix is 110°T, 1.9 nm from Westfield church spire. You steer 104°T at 4.2 kn through the water. At 0855 a new fix puts you 264°T, 1.3 nm from Gannet Rock daybeacon.

   Plot the 0855 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  

8. At 1335 your fix is 039°T, 2.2 nm from Westfield church spire. You steer 126°T at 4.7 kn through the water. At 1410 a new fix puts you 021°T, 2.5 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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn