Worksheet 357 · 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 0725 your fix is 092°T, 3.2 nm from Westfield church spire. You steer 092°T at 4.1 kn through the water. At 0815 a new fix puts you 210°T, 2.7 nm from Tern Island tower.

   Plot the 0815 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  

2. At 1335 your fix is 278°T, 2.0 nm from Gannet Rock daybeacon. You steer 275°T at 6.9 kn through the water. At 1410 a new fix puts you 033°T, 3.3 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  

3. At 1435 your fix is 020°T, 3.2 nm from Westfield church spire. You steer 139°T at 7.7 kn through the water. At 1520 a new fix puts you 215°T, 2.5 nm from Tern Island tower.

   Plot the 1520 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  

4. At 1005 your fix is 176°T, 1.3 nm from Gannet Rock daybeacon. You steer 261°T at 7.0 kn through the water. At 1040 a new fix puts you 356°T, 2.7 nm from Mill stack.

   Plot the 1040 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 1430 your fix is 240°T, 1.9 nm from Gannet Rock daybeacon. You steer 032°T at 4.7 kn through the water. At 1510 a new fix puts you 086°T, 2.1 nm from Tern Island tower.

   Plot the 1510 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  

6. At 0955 your fix is 264°T, 1.9 nm from Tern Island tower. You steer 265°T at 7.9 kn through the water. At 1030 a new fix puts you 059°T, 1.6 nm from Westfield church spire.

   Plot the 1030 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  

7. At 0720 your fix is 026°T, 2.4 nm from Tern Island tower. You steer 238°T at 6.7 kn through the water. At 0750 a new fix puts you 282°T, 2.2 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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1135 your fix is 248°T, 3.5 nm from Tern Island tower. You steer 197°T at 7.0 kn through the water. At 1205 a new fix puts you 089°T, 1.5 nm from Heron Point Light.

   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