Worksheet 429 · 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 0815 your fix is 072°T, 1.6 nm from Heron Point Light. You steer 326°T at 6.4 kn through the water. At 0855 a new fix puts you 039°T, 1.8 nm from Westfield church spire.

   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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 0915 your fix is 036°T, 3.3 nm from Gannet Rock daybeacon. You steer 298°T at 7.1 kn through the water. At 0945 a new fix puts you 041°T, 1.8 nm from Tern Island tower.

   Plot the 0945 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  

3. At 0730 your fix is 040°T, 2.8 nm from Westfield church spire. You steer 135°T at 8.2 kn through the water. At 0810 a new fix puts you 213°T, 2.7 nm from Tern Island tower.

   Plot the 0810 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  

4. At 0925 your fix is 045°T, 2.6 nm from Tern Island tower. You steer 267°T at 6.3 kn through the water. At 1030 a new fix puts you 021°T, 2.9 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 65 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1400 your fix is 330°T, 1.6 nm from Tern Island tower. You steer 259°T at 4.8 kn through the water. At 1510 a new fix puts you 006°T, 2.6 nm from Westfield church spire.

   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 70 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 1030 your fix is 036°T, 2.7 nm from Kittle water tank. You steer 330°T at 5.2 kn through the water. At 1120 a new fix puts you 076°T, 3.9 nm from Tern Island tower.

   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 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1355 your fix is 022°T, 0.9 nm from Westfield church spire. You steer 122°T at 8.0 kn through the water. At 1450 a new fix puts you 240°T, 1.6 nm from Gannet Rock daybeacon.

   Plot the 1450 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 1550 your fix is 251°T, 3.4 nm from Tern Island tower. You steer 131°T at 5.7 kn through the water. At 1630 a new fix puts you 260°T, 2.8 nm from Gannet Rock daybeacon.

   Plot the 1630 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