Worksheet 447 · 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 0845 your fix is 247°T, 3.3 nm from Tern Island tower. You steer 095°T at 8.8 kn through the water. At 0935 a new fix puts you 067°T, 2.7 nm from Gannet Rock daybeacon.

   Plot the 0935 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  

2. At 1315 your fix is 285°T, 1.9 nm from Gannet Rock daybeacon. You steer 127°T at 8.6 kn through the water. At 1345 a new fix puts you 038°T, 1.3 nm from Kittle water tank.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 0825 your fix is 047°T, 1.5 nm from Heron Point Light. You steer 028°T at 4.6 kn through the water. At 0915 a new fix puts you 257°T, 2.6 nm from Tern Island tower.

   Plot the 0915 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  

4. At 0720 your fix is 089°T, 2.4 nm from Westfield church spire. You steer 111°T at 6.4 kn through the water. At 0755 a new fix puts you 256°T, 2.8 nm from Gannet Rock daybeacon.

   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  

5. At 1150 your fix is 039°T, 2.0 nm from Gannet Rock daybeacon. You steer 170°T at 4.2 kn through the water. At 1225 a new fix puts you 035°T, 1.9 nm from Kittle water tank.

   Plot the 1225 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 1115 your fix is 203°T, 2.2 nm from Gannet Rock daybeacon. You steer 266°T at 4.5 kn through the water. At 1205 a new fix puts you 070°T, 2.5 nm from Heron Point Light.

   Plot the 1205 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  

7. At 1010 your fix is 070°T, 1.3 nm from Gannet Rock daybeacon. You steer 349°T at 4.7 kn through the water. At 1055 a new fix puts you 073°T, 2.9 nm from Tern Island tower.

   Plot the 1055 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  

8. At 1430 your fix is 032°T, 3.2 nm from Westfield church spire. You steer 148°T at 4.8 kn through the water. At 1535 a new fix puts you 019°T, 1.8 nm from Heron Point Light.

   Plot the 1535 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