Worksheet 228 · 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 1200 your fix is 219°T, 1.4 nm from Tern Island tower. You steer 269°T at 4.7 kn through the water. At 1255 a new fix puts you 040°T, 2.2 nm from Heron Point Light.

   Plot the 1255 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 0810 your fix is 137°T, 1.4 nm from Westfield church spire. You steer 017°T at 4.8 kn through the water. At 0855 a new fix puts you 051°T, 1.5 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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 1105 your fix is 031°T, 2.7 nm from Westfield church spire. You steer 120°T at 8.3 kn through the water. At 1140 a new fix puts you 248°T, 2.5 nm from Tern Island tower.

   Plot the 1140 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 0920 your fix is 037°T, 2.1 nm from Mill stack. You steer 089°T at 5.8 kn through the water. At 1005 a new fix puts you 038°T, 1.8 nm from Kittle water tank.

   Plot the 1005 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  

5. At 1140 your fix is 266°T, 2.4 nm from Gannet Rock daybeacon. You steer 250°T at 9.0 kn through the water. At 1210 a new fix puts you 088°T, 1.1 nm from Heron Point Light.

   Plot the 1210 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 1050 your fix is 022°T, 2.8 nm from Heron Point Light. You steer 228°T at 4.7 kn through the water. At 1120 a new fix puts you 333°T, 1.6 nm from Heron Point Light.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1320 your fix is 026°T, 2.0 nm from Mill stack. You steer 080°T at 6.5 kn through the water. At 1355 a new fix puts you 130°T, 1.6 nm from Gannet Rock daybeacon.

   Plot the 1355 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  

8. At 1210 your fix is 337°T, 1.8 nm from Heron Point Light. You steer 099°T at 4.2 kn through the water. At 1320 a new fix puts you 011°T, 1.5 nm from Mill stack.

   Plot the 1320 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