Worksheet 495 · 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 0940 your fix is 059°T, 2.4 nm from Heron Point Light. You steer 348°T at 6.2 kn through the water. At 1035 a new fix puts you 048°T, 3.4 nm from Westfield church spire.

   Plot the 1035 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  

2. At 0740 your fix is 039°T, 2.4 nm from Gannet Rock daybeacon. You steer 031°T at 4.3 kn through the water. At 0820 a new fix puts you 041°T, 4.8 nm from Gannet Rock daybeacon.

   Plot the 0820 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  

3. At 0915 your fix is 293°T, 3.0 nm from Tern Island tower. You steer 154°T at 4.8 kn through the water. At 1030 a new fix puts you 306°T, 1.8 nm from Kittle water tank.

   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 75 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1520 your fix is 297°T, 2.4 nm from Tern Island tower. You steer 087°T at 6.0 kn through the water. At 1615 a new fix puts you 036°T, 4.4 nm from Gannet Rock daybeacon.

   Plot the 1615 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  

5. At 1600 your fix is 284°T, 2.8 nm from Tern Island tower. You steer 246°T at 4.1 kn through the water. At 1635 a new fix puts you 098°T, 2.6 nm from Westfield church spire.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 0715 your fix is 003°T, 3.5 nm from Westfield church spire. You steer 138°T at 5.7 kn through the water. At 0840 a new fix puts you 347°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 85 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1540 your fix is 162°T, 1.4 nm from Westfield church spire. You steer 098°T at 7.3 kn through the water. At 1650 a new fix puts you 316°T, 1.2 nm from Gannet Rock daybeacon.

   Plot the 1650 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  

8. At 1330 your fix is 197°T, 1.5 nm from Tern Island tower. You steer 139°T at 7.2 kn through the water. At 1405 a new fix puts you 184°T, 1.5 nm from Gannet Rock daybeacon.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn