Worksheet 738 · 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 1145 your fix is 081°T, 1.9 nm from Heron Point Light. You steer 055°T at 7.0 kn through the water. At 1240 a new fix puts you 006°T, 1.2 nm from Gannet Rock daybeacon.

   Plot the 1240 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  

2. At 0905 your fix is 183°T, 1.9 nm from Gannet Rock daybeacon. You steer 280°T at 5.0 kn through the water. At 0935 a new fix puts you 006°T, 2.3 nm from Mill stack.

   Plot the 0935 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  

3. At 0820 your fix is 321°T, 2.2 nm from Tern Island tower. You steer 187°T at 6.1 kn through the water. At 0920 a new fix puts you 340°T, 1.5 nm from Mill stack.

   Plot the 0920 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  

4. At 1055 your fix is 008°T, 3.6 nm from Westfield church spire. You steer 138°T at 7.0 kn through the water. At 1150 a new fix puts you 220°T, 3.4 nm from Tern Island tower.

   Plot the 1150 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  

5. At 1500 your fix is 283°T, 0.9 nm from Gannet Rock daybeacon. You steer 287°T at 6.9 kn through the water. At 1545 a new fix puts you 089°T, 3.7 nm from Westfield church spire.

   Plot the 1545 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  

6. At 1200 your fix is 028°T, 1.7 nm from Heron Point Light. You steer 336°T at 7.6 kn through the water. At 1235 a new fix puts you 022°T, 1.9 nm from Westfield church spire.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 0950 your fix is 034°T, 1.5 nm from Gannet Rock daybeacon. You steer 258°T at 4.8 kn through the water. At 1025 a new fix puts you 279°T, 1.5 nm from Gannet Rock daybeacon.

   Plot the 1025 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  

8. At 1255 your fix is 300°T, 4.3 nm from Tern Island tower. You steer 085°T at 4.5 kn through the water. At 1325 a new fix puts you 341°T, 2.1 nm from Tern Island tower.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn