Worksheet 869 · 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 1245 your fix is 037°T, 4.0 nm from Westfield church spire. You steer 126°T at 4.9 kn through the water. At 1345 a new fix puts you 285°T, 1.5 nm from Tern Island tower.

   Plot the 1345 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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1200 your fix is 015°T, 2.7 nm from Westfield church spire. You steer 152°T at 6.1 kn through the water. At 1255 a new fix puts you 080°T, 1.8 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  

3. At 1450 your fix is 011°T, 2.3 nm from Mill stack. You steer 295°T at 8.4 kn through the water. At 1530 a new fix puts you 343°T, 1.7 nm from Heron Point Light.

   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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1325 your fix is 247°T, 2.5 nm from Tern Island tower. You steer 250°T at 5.3 kn through the water. At 1355 a new fix puts you 013°T, 2.3 nm from Heron Point Light.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1155 your fix is 069°T, 1.5 nm from Westfield church spire. You steer 051°T at 5.4 kn through the water. At 1225 a new fix puts you 050°T, 4.3 nm from Westfield church spire.

   Plot the 1225 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 1120 your fix is 063°T, 2.6 nm from Westfield church spire. You steer 109°T at 4.6 kn through the water. At 1220 a new fix puts you 158°T, 3.0 nm from Tern Island tower.

   Plot the 1220 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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 0835 your fix is 043°T, 2.3 nm from Tern Island tower. You steer 164°T at 8.3 kn through the water. At 0910 a new fix puts you 016°T, 1.7 nm from Kittle water tank.

   Plot the 0910 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 0710 your fix is 340°T, 1.7 nm from Kittle water tank. You steer 270°T at 5.6 kn through the water. At 0820 a new fix puts you 054°T, 3.0 nm from Heron Point Light.

   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 70 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn