Worksheet 853 · 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 0735 your fix is 009°T, 2.2 nm from Heron Point Light. You steer 041°T at 8.6 kn through the water. At 0805 a new fix puts you 291°T, 3.0 nm from Tern Island tower.

   Plot the 0805 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  

2. At 1240 your fix is 336°T, 2.5 nm from Mill stack. You steer 332°T at 4.6 kn through the water. At 1325 a new fix puts you 012°T, 2.3 nm from Heron Point Light.

   Plot the 1325 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 1050 your fix is 010°T, 2.2 nm from Heron Point Light. You steer 026°T at 5.4 kn through the water. At 1130 a new fix puts you 281°T, 3.3 nm from Tern Island tower.

   Plot the 1130 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 1145 your fix is 036°T, 2.6 nm from Heron Point Light. You steer 134°T at 5.4 kn through the water. At 1230 a new fix puts you 214°T, 2.5 nm from Gannet Rock daybeacon.

   Plot the 1230 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 0825 your fix is 035°T, 1.9 nm from Tern Island tower. You steer 154°T at 4.2 kn through the water. At 0915 a new fix puts you 077°T, 1.7 nm from Gannet Rock daybeacon.

   Plot the 0915 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 1220 your fix is 083°T, 1.8 nm from Heron Point Light. You steer 347°T at 4.8 kn through the water. At 1305 a new fix puts you 027°T, 3.0 nm from Heron Point Light.

   Plot the 1305 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  

7. At 0735 your fix is 017°T, 1.4 nm from Gannet Rock daybeacon. You steer 263°T at 4.1 kn through the water. At 0840 a new fix puts you 028°T, 2.7 nm from Heron Point Light.

   Plot the 0840 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  

8. At 0905 your fix is 229°T, 1.8 nm from Gannet Rock daybeacon. You steer 309°T at 7.1 kn through the water. At 1005 a new fix puts you 097°T, 1.5 nm from Westfield church spire.

   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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn