Worksheet 13 · 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 1050 your fix is 040°T, 3.0 nm from Heron Point Light. You steer 102°T at 4.3 kn through the water. At 1155 a new fix puts you 215°T, 1.9 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 65 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 0710 your fix is 041°T, 1.6 nm from Westfield church spire. You steer 136°T at 4.0 kn through the water. At 0835 a new fix puts you 053°T, 2.2 nm from Heron Point Light.

   Plot the 0835 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  

3. At 1325 your fix is 072°T, 2.4 nm from Gannet Rock daybeacon. You steer 321°T at 6.0 kn through the water. At 1355 a new fix puts you 016°T, 2.3 nm from Gannet Rock daybeacon.

   Plot the 1355 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 1415 your fix is 012°T, 1.5 nm from Westfield church spire. You steer 081°T at 8.4 kn through the water. At 1450 a new fix puts you 317°T, 3.3 nm from Tern Island tower.

   Plot the 1450 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 1425 your fix is 031°T, 4.1 nm from Westfield church spire. You steer 090°T at 7.5 kn through the water. At 1530 a new fix puts you 038°T, 2.1 nm from Tern Island tower.

   Plot the 1530 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  

6. At 1115 your fix is 012°T, 1.7 nm from Mill stack. You steer 336°T at 6.0 kn through the water. At 1150 a new fix puts you 263°T, 3.4 nm from Tern Island tower.

   Plot the 1150 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  

7. At 1520 your fix is 357°T, 2.6 nm from Mill stack. You steer 046°T at 5.3 kn through the water. At 1610 a new fix puts you 030°T, 2.5 nm from Gannet Rock daybeacon.

   Plot the 1610 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  

8. At 1405 your fix is 062°T, 3.1 nm from Westfield church spire. You steer 174°T at 5.0 kn through the water. At 1445 a new fix puts you 026°T, 2.9 nm from Heron Point Light.

   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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn