Worksheet 201 · 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 1440 your fix is 071°T, 4.7 nm from Tern Island tower. You steer 193°T at 7.4 kn through the water. At 1525 a new fix puts you 015°T, 1.2 nm from Kittle water tank.

   Plot the 1525 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  

2. At 0950 your fix is 041°T, 3.8 nm from Gannet Rock daybeacon. You steer 242°T at 8.6 kn through the water. At 1035 a new fix puts you 219°T, 2.8 nm from Tern Island tower.

   Plot the 1035 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  

3. At 1105 your fix is 146°T, 3.2 nm from Westfield church spire. You steer 080°T at 7.0 kn through the water. At 1155 a new fix puts you 180°T, 1.8 nm from Tern Island tower.

   Plot the 1155 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 1350 your fix is 232°T, 2.1 nm from Tern Island tower. You steer 225°T at 4.9 kn through the water. At 1430 a new fix puts you 090°T, 1.0 nm from Heron Point Light.

   Plot the 1430 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 1000 your fix is 354°T, 3.4 nm from Mill stack. You steer 336°T at 4.7 kn through the water. At 1035 a new fix puts you 031°T, 3.7 nm from Heron Point Light.

   Plot the 1035 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 1130 your fix is 033°T, 2.2 nm from Mill stack. You steer 345°T at 4.5 kn through the water. At 1255 a new fix puts you 245°T, 3.5 nm from Tern Island tower.

   Plot the 1255 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  

7. At 1315 your fix is 183°T, 0.9 nm from Gannet Rock daybeacon. You steer 306°T at 6.4 kn through the water. At 1445 a new fix puts you 010°T, 2.5 nm from Westfield church spire.

   Plot the 1445 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 90 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1430 your fix is 341°T, 1.0 nm from Gannet Rock daybeacon. You steer 236°T at 6.6 kn through the water. At 1505 a new fix puts you 357°T, 2.2 nm from Mill stack.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn