Worksheet 111 · 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 1345 your fix is 028°T, 1.9 nm from Kittle water tank. You steer 275°T at 7.1 kn through the water. At 1510 a new fix puts you 097°T, 1.3 nm from Westfield church spire.

   Plot the 1510 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  

2. At 1505 your fix is 094°T, 1.8 nm from Gannet Rock daybeacon. You steer 328°T at 6.1 kn through the water. At 1540 a new fix puts you 080°T, 2.3 nm from Tern Island tower.

   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 1140 your fix is 028°T, 2.4 nm from Mill stack. You steer 043°T at 5.6 kn through the water. At 1250 a new fix puts you 068°T, 5.1 nm from Tern Island tower.

   Plot the 1250 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 70 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1200 your fix is 273°T, 1.0 nm from Gannet Rock daybeacon. You steer 124°T at 4.7 kn through the water. At 1245 a new fix puts you 316°T, 1.1 nm from Kittle water tank.

   Plot the 1245 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  

5. At 1515 your fix is 344°T, 1.7 nm from Tern Island tower. You steer 084°T at 7.3 kn through the water. At 1550 a new fix puts you 057°T, 4.7 nm from Tern Island tower.

   Plot the 1550 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 0900 your fix is 344°T, 2.5 nm from Mill stack. You steer 084°T at 4.5 kn through the water. At 0950 a new fix puts you 212°T, 2.2 nm from Gannet Rock daybeacon.

   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 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1150 your fix is 051°T, 2.5 nm from Heron Point Light. You steer 347°T at 5.6 kn through the water. At 1225 a new fix puts you 282°T, 3.8 nm from Tern Island tower.

   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  

8. At 1100 your fix is 011°T, 2.1 nm from Tern Island tower. You steer 147°T at 6.1 kn through the water. At 1145 a new fix puts you 085°T, 0.9 nm from Gannet Rock daybeacon.

   Plot the 1145 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