Worksheet 126 · 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 0830 your fix is 069°T, 4.8 nm from Tern Island tower. You steer 187°T at 4.4 kn through the water. At 0925 a new fix puts you 141°T, 1.1 nm from Gannet Rock daybeacon.

   Plot the 0925 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 1505 your fix is 266°T, 1.9 nm from Tern Island tower. You steer 164°T at 7.7 kn through the water. At 1540 a new fix puts you 001°T, 1.7 nm from Mill stack.

   Plot the 1540 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 1205 your fix is 047°T, 2.1 nm from Gannet Rock daybeacon. You steer 248°T at 7.4 kn through the water. At 1235 a new fix puts you 199°T, 2.3 nm from Tern Island tower.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1450 your fix is 027°T, 2.1 nm from Kittle water tank. You steer 281°T at 4.4 kn through the water. At 1540 a new fix puts you 221°T, 1.3 nm from Gannet Rock daybeacon.

   Plot the 1540 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  

5. At 1435 your fix is 086°T, 1.8 nm from Heron Point Light. You steer 050°T at 4.4 kn through the water. At 1505 a new fix puts you 064°T, 2.9 nm from Heron Point Light.

   Plot the 1505 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 1120 your fix is 075°T, 1.6 nm from Gannet Rock daybeacon. You steer 333°T at 4.6 kn through the water. At 1200 a new fix puts you 013°T, 1.6 nm from Gannet Rock daybeacon.

   Plot the 1200 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 1045 your fix is 081°T, 2.6 nm from Gannet Rock daybeacon. You steer 346°T at 7.7 kn through the water. At 1120 a new fix puts you 073°T, 3.4 nm from Tern Island tower.

   Plot the 1120 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 1530 your fix is 049°T, 2.0 nm from Tern Island tower. You steer 072°T at 5.5 kn through the water. At 1610 a new fix puts you 066°T, 4.9 nm from Tern Island tower.

   Plot the 1610 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