Worksheet 757 · 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 1255 your fix is 261°T, 2.7 nm from Tern Island tower. You steer 131°T at 5.2 kn through the water. At 1400 a new fix puts you 093°T, 1.9 nm from Gannet Rock daybeacon.

   Plot the 1400 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  

2. At 0730 your fix is 073°T, 3.8 nm from Tern Island tower. You steer 273°T at 6.9 kn through the water. At 0800 a new fix puts you 039°T, 1.5 nm from Tern Island tower.

   Plot the 0800 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 0810 your fix is 151°T, 1.5 nm from Gannet Rock daybeacon. You steer 027°T at 4.9 kn through the water. At 0840 a new fix puts you 063°T, 1.6 nm from Gannet Rock daybeacon.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 0905 your fix is 004°T, 2.9 nm from Westfield church spire. You steer 122°T at 4.3 kn through the water. At 1030 a new fix puts you 067°T, 2.8 nm from Westfield church spire.

   Plot the 1030 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 85 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1325 your fix is 060°T, 2.8 nm from Tern Island tower. You steer 177°T at 5.0 kn through the water. At 1425 a new fix puts you 305°T, 1.1 nm from Gannet Rock daybeacon.

   Plot the 1425 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  

6. At 0755 your fix is 139°T, 1.0 nm from Westfield church spire. You steer 064°T at 4.0 kn through the water. At 0900 a new fix puts you 242°T, 1.9 nm from Tern Island tower.

   Plot the 0900 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  

7. At 1325 your fix is 042°T, 4.5 nm from Westfield church spire. You steer 160°T at 4.6 kn through the water. At 1450 a new fix puts you 357°T, 1.2 nm from Mill stack.

   Plot the 1450 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 85 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1425 your fix is 352°T, 2.0 nm from Heron Point Light. You steer 011°T at 4.6 kn through the water. At 1520 a new fix puts you 056°T, 3.3 nm from Westfield church spire.

   Plot the 1520 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