Worksheet 859 · 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 0920 your fix is 084°T, 2.1 nm from Westfield church spire. You steer 108°T at 6.0 kn through the water. At 0950 a new fix puts you 222°T, 2.5 nm from Tern Island tower.

   Plot the 0950 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 1430 your fix is 238°T, 2.2 nm from Gannet Rock daybeacon. You steer 307°T at 8.6 kn through the water. At 1525 a new fix puts you 057°T, 1.6 nm from Westfield church spire.

   Plot the 1525 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  

3. At 1445 your fix is 121°T, 1.5 nm from Tern Island tower. You steer 123°T at 7.3 kn through the water. At 1515 a new fix puts you 086°T, 2.6 nm from Gannet Rock daybeacon.

   Plot the 1515 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 1205 your fix is 170°T, 1.2 nm from Westfield church spire. You steer 090°T at 4.2 kn through the water. At 1305 a new fix puts you 039°T, 3.5 nm from Heron Point Light.

   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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 0810 your fix is 262°T, 0.9 nm from Gannet Rock daybeacon. You steer 258°T at 4.1 kn through the water. At 0840 a new fix puts you 270°T, 2.2 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  

6. At 0950 your fix is 257°T, 2.4 nm from Tern Island tower. You steer 281°T at 4.1 kn through the water. At 1050 a new fix puts you 052°T, 1.5 nm from Westfield church spire.

   Plot the 1050 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  

7. At 1155 your fix is 058°T, 4.8 nm from Tern Island tower. You steer 193°T at 4.5 kn through the water. At 1315 a new fix puts you 252°T, 2.3 nm from Gannet Rock daybeacon.

   Plot the 1315 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 80 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 0720 your fix is 005°T, 1.2 nm from Gannet Rock daybeacon. You steer 251°T at 5.3 kn through the water. At 0755 a new fix puts you 225°T, 2.4 nm from Tern Island tower.

   Plot the 0755 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