Worksheet 893 · 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 0940 your fix is 078°T, 0.9 nm from Heron Point Light. You steer 070°T at 8.6 kn through the water. At 1040 a new fix puts you 059°T, 3.1 nm from Gannet Rock daybeacon.

   Plot the 1040 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 1245 your fix is 063°T, 2.9 nm from Heron Point Light. You steer 008°T at 6.0 kn through the water. At 1335 a new fix puts you 345°T, 2.3 nm from Tern Island tower.

   Plot the 1335 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 1410 your fix is 090°T, 2.8 nm from Gannet Rock daybeacon. You steer 330°T at 7.2 kn through the water. At 1440 a new fix puts you 067°T, 2.9 nm from Tern Island tower.

   Plot the 1440 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  

4. At 1400 your fix is 280°T, 1.9 nm from Tern Island tower. You steer 232°T at 4.2 kn through the water. At 1430 a new fix puts you 263°T, 2.8 nm from Tern Island tower.

   Plot the 1430 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 0730 your fix is 217°T, 2.4 nm from Gannet Rock daybeacon. You steer 275°T at 4.1 kn through the water. At 0820 a new fix puts you 048°T, 2.9 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 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 1315 your fix is 037°T, 4.4 nm from Westfield church spire. You steer 210°T at 6.7 kn through the water. At 1345 a new fix puts you 062°T, 1.8 nm from Westfield church spire.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1205 your fix is 015°T, 2.1 nm from Kittle water tank. You steer 250°T at 6.5 kn through the water. At 1235 a new fix puts you 062°T, 2.5 nm from Mill stack.

   Plot the 1235 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  

8. At 0735 your fix is 103°T, 2.5 nm from Gannet Rock daybeacon. You steer 343°T at 8.1 kn through the water. At 0815 a new fix puts you 058°T, 4.8 nm from Tern Island tower.

   Plot the 0815 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