Worksheet 106 · 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 1235 your fix is 059°T, 2.0 nm from Tern Island tower. You steer 163°T at 9.0 kn through the water. At 1305 a new fix puts you 102°T, 2.4 nm from Gannet Rock daybeacon.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1355 your fix is 072°T, 3.8 nm from Tern Island tower. You steer 286°T at 4.4 kn through the water. At 1500 a new fix puts you 346°T, 1.9 nm from Tern Island tower.

   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 65 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 0905 your fix is 292°T, 1.8 nm from Tern Island tower. You steer 280°T at 5.0 kn through the water. At 0945 a new fix puts you 067°T, 3.7 nm from Westfield church spire.

   Plot the 0945 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 301°T, 4.1 nm from Tern Island tower. You steer 170°T at 5.2 kn through the water. At 1220 a new fix puts you 079°T, 3.3 nm from Westfield church spire.

   Plot the 1220 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  

5. At 0700 your fix is 026°T, 2.2 nm from Gannet Rock daybeacon. You steer 240°T at 4.1 kn through the water. At 0735 a new fix puts you 181°T, 1.1 nm from Tern Island tower.

   Plot the 0735 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 1525 your fix is 047°T, 3.7 nm from Westfield church spire. You steer 160°T at 6.3 kn through the water. At 1605 a new fix puts you 052°T, 3.3 nm from Heron Point Light.

   Plot the 1605 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 1550 your fix is 093°T, 1.8 nm from Gannet Rock daybeacon. You steer 249°T at 4.0 kn through the water. At 1715 a new fix puts you 013°T, 2.5 nm from Mill stack.

   Plot the 1715 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 1215 your fix is 028°T, 2.7 nm from Tern Island tower. You steer 243°T at 6.0 kn through the water. At 1300 a new fix puts you 283°T, 3.4 nm from Tern Island tower.

   Plot the 1300 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