Worksheet 349 · 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 1505 your fix is 241°T, 2.6 nm from Gannet Rock daybeacon. You steer 089°T at 8.7 kn through the water. At 1535 a new fix puts you 101°T, 2.5 nm from Gannet Rock daybeacon.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1525 your fix is 007°T, 2.2 nm from Westfield church spire. You steer 076°T at 6.3 kn through the water. At 1620 a new fix puts you 295°T, 2.5 nm from Tern Island tower.

   Plot the 1620 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 1325 your fix is 040°T, 1.7 nm from Westfield church spire. You steer 136°T at 5.0 kn through the water. At 1435 a new fix puts you 080°T, 1.2 nm from Heron Point Light.

   Plot the 1435 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 0930 your fix is 009°T, 1.6 nm from Kittle water tank. You steer 350°T at 8.7 kn through the water. At 1015 a new fix puts you 050°T, 3.7 nm from Tern Island tower.

   Plot the 1015 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 1425 your fix is 044°T, 4.3 nm from Gannet Rock daybeacon. You steer 205°T at 4.9 kn through the water. At 1520 a new fix puts you 175°T, 1.7 nm from Gannet Rock daybeacon.

   Plot the 1520 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  

6. At 1115 your fix is 035°T, 2.9 nm from Westfield church spire. You steer 087°T at 8.2 kn through the water. At 1145 a new fix puts you 318°T, 3.2 nm from Tern Island tower.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 0735 your fix is 113°T, 1.9 nm from Westfield church spire. You steer 110°T at 7.6 kn through the water. At 0805 a new fix puts you 344°T, 2.9 nm from Mill stack.

   Plot the 0805 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  

8. At 1535 your fix is 039°T, 3.7 nm from Gannet Rock daybeacon. You steer 229°T at 4.4 kn through the water. At 1645 a new fix puts you 248°T, 2.5 nm from Gannet Rock daybeacon.

   Plot the 1645 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