Worksheet 810 · 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 1230 your fix is 212°T, 1.7 nm from Tern Island tower. You steer 101°T at 4.2 kn through the water. At 1320 a new fix puts you 298°T, 1.4 nm from Gannet Rock daybeacon.

   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 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 0945 your fix is 038°T, 4.5 nm from Gannet Rock daybeacon. You steer 210°T at 5.0 kn through the water. At 1020 a new fix puts you 085°T, 2.5 nm from Gannet Rock daybeacon.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 0805 your fix is 075°T, 2.6 nm from Gannet Rock daybeacon. You steer 270°T at 6.6 kn through the water. At 0855 a new fix puts you 239°T, 2.7 nm from Tern Island tower.

   Plot the 0855 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  

4. At 1140 your fix is 045°T, 4.1 nm from Westfield church spire. You steer 186°T at 8.1 kn through the water. At 1210 a new fix puts you 030°T, 2.7 nm from Heron Point Light.

   Plot the 1210 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 0925 your fix is 325°T, 1.9 nm from Tern Island tower. You steer 222°T at 7.1 kn through the water. At 1015 a new fix puts you 071°T, 1.7 nm from Heron Point Light.

   Plot the 1015 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 1025 your fix is 345°T, 2.9 nm from Mill stack. You steer 296°T at 5.9 kn through the water. At 1105 a new fix puts you 357°T, 2.1 nm from Heron Point Light.

   Plot the 1105 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 1600 your fix is 245°T, 2.6 nm from Gannet Rock daybeacon. You steer 320°T at 4.7 kn through the water. At 1645 a new fix puts you 088°T, 3.6 nm from Westfield church spire.

   Plot the 1645 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 1250 your fix is 244°T, 2.5 nm from Gannet Rock daybeacon. You steer 078°T at 7.6 kn through the water. At 1330 a new fix puts you 006°T, 1.8 nm from Kittle water tank.

   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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn