Worksheet 929 · 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 1355 your fix is 053°T, 2.1 nm from Heron Point Light. You steer 339°T at 4.9 kn through the water. At 1425 a new fix puts you 093°T, 3.4 nm from Westfield church spire.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1245 your fix is 058°T, 3.8 nm from Tern Island tower. You steer 269°T at 8.3 kn through the water. At 1345 a new fix puts you 280°T, 3.7 nm from Tern Island tower.

   Plot the 1345 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  

3. At 0705 your fix is 228°T, 2.1 nm from Tern Island tower. You steer 301°T at 7.4 kn through the water. At 0735 a new fix puts you 048°T, 2.7 nm from Westfield church spire.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 0700 your fix is 081°T, 1.9 nm from Westfield church spire. You steer 093°T at 6.8 kn through the water. At 0740 a new fix puts you 233°T, 2.3 nm from Tern Island tower.

   Plot the 0740 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  

5. At 1550 your fix is 009°T, 3.0 nm from Mill stack. You steer 327°T at 8.9 kn through the water. At 1625 a new fix puts you 288°T, 3.0 nm from Tern Island tower.

   Plot the 1625 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 0950 your fix is 035°T, 2.2 nm from Mill stack. You steer 035°T at 6.5 kn through the water. At 1045 a new fix puts you 083°T, 2.1 nm from Tern Island tower.

   Plot the 1045 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  

7. At 1120 your fix is 236°T, 2.3 nm from Gannet Rock daybeacon. You steer 073°T at 4.0 kn through the water. At 1220 a new fix puts you 034°T, 2.6 nm from Kittle water tank.

   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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1110 your fix is 022°T, 2.3 nm from Heron Point Light. You steer 097°T at 4.9 kn through the water. At 1200 a new fix puts you 172°T, 1.7 nm from Tern Island tower.

   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 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn