Worksheet 560 · 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 1520 your fix is 063°T, 2.9 nm from Tern Island tower. You steer 211°T at 8.0 kn through the water. At 1605 a new fix puts you 037°T, 2.3 nm from Mill stack.

   Plot the 1605 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  

2. At 1435 your fix is 009°T, 1.8 nm from Westfield church spire. You steer 067°T at 4.8 kn through the water. At 1525 a new fix puts you 289°T, 3.9 nm from Tern Island tower.

   Plot the 1525 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  

3. At 1530 your fix is 017°T, 2.3 nm from Heron Point Light. You steer 068°T at 4.4 kn through the water. At 1615 a new fix puts you 260°T, 1.8 nm from Tern Island tower.

   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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1545 your fix is 038°T, 2.6 nm from Heron Point Light. You steer 102°T at 7.6 kn through the water. At 1625 a new fix puts you 328°T, 3.0 nm from Kittle water tank.

   Plot the 1625 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  

5. At 1110 your fix is 036°T, 3.2 nm from Westfield church spire. You steer 147°T at 6.9 kn through the water. At 1215 a new fix puts you 073°T, 2.7 nm from Heron Point Light.

   Plot the 1215 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  

6. At 1515 your fix is 006°T, 2.6 nm from Mill stack. You steer 057°T at 7.6 kn through the water. At 1615 a new fix puts you 077°T, 3.7 nm from Tern Island tower.

   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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 0745 your fix is 149°T, 1.1 nm from Westfield church spire. You steer 094°T at 6.9 kn through the water. At 0825 a new fix puts you 249°T, 3.7 nm from Tern Island tower.

   Plot the 0825 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  

8. At 0920 your fix is 247°T, 1.9 nm from Tern Island tower. You steer 189°T at 6.4 kn through the water. At 1000 a new fix puts you 353°T, 1.0 nm from Mill stack.

   Plot the 1000 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