Worksheet 347 · 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 0810 your fix is 237°T, 1.6 nm from Gannet Rock daybeacon. You steer 099°T at 4.2 kn through the water. At 0845 a new fix puts you 107°T, 1.7 nm from Gannet Rock daybeacon.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1245 your fix is 027°T, 3.6 nm from Westfield church spire. You steer 136°T at 7.7 kn through the water. At 1320 a new fix puts you 254°T, 1.8 nm from Tern Island tower.

   Plot the 1320 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  

3. At 0815 your fix is 280°T, 3.7 nm from Tern Island tower. You steer 125°T at 8.6 kn through the water. At 0910 a new fix puts you 159°T, 1.2 nm from Gannet Rock daybeacon.

   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 55 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1300 your fix is 101°T, 2.1 nm from Westfield church spire. You steer 060°T at 5.7 kn through the water. At 1340 a new fix puts you 261°T, 1.7 nm from Tern Island tower.

   Plot the 1340 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 1425 your fix is 028°T, 1.5 nm from Westfield church spire. You steer 061°T at 4.2 kn through the water. At 1500 a new fix puts you 056°T, 3.7 nm from Westfield church spire.

   Plot the 1500 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  

6. At 1120 your fix is 080°T, 1.5 nm from Gannet Rock daybeacon. You steer 008°T at 4.7 kn through the water. At 1200 a new fix puts you 035°T, 3.1 nm from Gannet Rock daybeacon.

   Plot the 1200 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 1250 your fix is 047°T, 2.3 nm from Heron Point Light. You steer 120°T at 5.0 kn through the water. At 1320 a new fix puts you 000°T, 2.3 nm from Mill stack.

   Plot the 1320 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 0930 your fix is 054°T, 4.0 nm from Westfield church spire. You steer 221°T at 4.6 kn through the water. At 1020 a new fix puts you 093°T, 1.8 nm from Westfield church spire.

   Plot the 1020 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