Worksheet 444 · 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 1040 your fix is 282°T, 3.6 nm from Tern Island tower. You steer 207°T at 4.7 kn through the water. At 1120 a new fix puts you 028°T, 3.2 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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1345 your fix is 035°T, 1.0 nm from Westfield church spire. You steer 070°T at 5.1 kn through the water. At 1455 a new fix puts you 281°T, 3.1 nm from Tern Island tower.

   Plot the 1455 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  

3. At 1400 your fix is 153°T, 2.8 nm from Tern Island tower. You steer 267°T at 5.3 kn through the water. At 1525 a new fix puts you 087°T, 2.3 nm from Westfield church spire.

   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 85 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1345 your fix is 318°T, 3.2 nm from Tern Island tower. You steer 251°T at 5.5 kn through the water. At 1415 a new fix puts you 051°T, 3.4 nm from Westfield church spire.

   Plot the 1415 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 0720 your fix is 057°T, 4.6 nm from Tern Island tower. You steer 213°T at 5.6 kn through the water. At 0845 a new fix puts you 323°T, 1.5 nm from Mill stack.

   Plot the 0845 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 85 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 0730 your fix is 302°T, 1.4 nm from Tern Island tower. You steer 059°T at 5.2 kn through the water. At 0810 a new fix puts you 019°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  

7. At 1245 your fix is 106°T, 1.9 nm from Westfield church spire. You steer 036°T at 4.7 kn through the water. At 1330 a new fix puts you 309°T, 3.8 nm from Tern Island tower.

   Plot the 1330 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  

8. At 1335 your fix is 058°T, 4.4 nm from Tern Island tower. You steer 217°T at 4.1 kn through the water. At 1405 a new fix puts you 088°T, 2.8 nm from Tern Island tower.

   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