Worksheet 642 · 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 1515 your fix is 056°T, 3.5 nm from Westfield church spire. You steer 133°T at 4.9 kn through the water. At 1620 a new fix puts you 015°T, 2.3 nm from Mill stack.

   Plot the 1620 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  

2. At 1040 your fix is 008°T, 1.4 nm from Kittle water tank. You steer 354°T at 4.8 kn through the water. At 1115 a new fix puts you 081°T, 2.5 nm from Gannet Rock daybeacon.

   Plot the 1115 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 0725 your fix is 003°T, 2.7 nm from Mill stack. You steer 321°T at 7.9 kn through the water. At 0800 a new fix puts you 054°T, 3.0 nm from Westfield church spire.

   Plot the 0800 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  

4. At 0735 your fix is 257°T, 2.0 nm from Gannet Rock daybeacon. You steer 308°T at 5.9 kn through the water. At 0805 a new fix puts you 240°T, 3.2 nm from Tern Island tower.

   Plot the 0805 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  

5. At 1335 your fix is 237°T, 3.2 nm from Tern Island tower. You steer 347°T at 7.6 kn through the water. At 1405 a new fix puts you 052°T, 4.2 nm from Westfield church spire.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 1330 your fix is 241°T, 2.2 nm from Tern Island tower. You steer 184°T at 6.7 kn through the water. At 1400 a new fix puts you 003°T, 1.6 nm from Mill stack.

   Plot the 1400 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  

7. At 1225 your fix is 338°T, 1.8 nm from Heron Point Light. You steer 012°T at 4.1 kn through the water. At 1335 a new fix puts you 059°T, 3.1 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  

8. At 1400 your fix is 095°T, 1.4 nm from Heron Point Light. You steer 082°T at 4.4 kn through the water. At 1530 a new fix puts you 100°T, 1.5 nm from Gannet Rock daybeacon.

   Plot the 1530 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 90 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn