Worksheet 399 · 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 0940 your fix is 079°T, 2.0 nm from Heron Point Light. You steer 089°T at 7.0 kn through the water. At 1020 a new fix puts you 196°T, 1.2 nm from Gannet Rock daybeacon.

   Plot the 1020 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  

2. At 0720 your fix is 019°T, 1.1 nm from Gannet Rock daybeacon. You steer 229°T at 6.2 kn through the water. At 0800 a new fix puts you 258°T, 2.9 nm from Gannet Rock daybeacon.

   Plot the 0800 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  

3. At 1035 your fix is 265°T, 1.9 nm from Tern Island tower. You steer 163°T at 6.2 kn through the water. At 1115 a new fix puts you 014°T, 2.6 nm from Mill stack.

   Plot the 1115 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  

4. At 1515 your fix is 016°T, 2.7 nm from Mill stack. You steer 040°T at 5.2 kn through the water. At 1645 a new fix puts you 044°T, 1.7 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 90 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1105 your fix is 039°T, 4.0 nm from Westfield church spire. You steer 091°T at 5.4 kn through the water. At 1215 a new fix puts you 060°T, 4.0 nm from Tern Island tower.

   Plot the 1215 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  

6. At 0920 your fix is 060°T, 2.8 nm from Gannet Rock daybeacon. You steer 250°T at 7.0 kn through the water. At 1025 a new fix puts you 040°T, 3.6 nm from Heron Point Light.

   Plot the 1025 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  

7. At 1120 your fix is 169°T, 1.6 nm from Tern Island tower. You steer 294°T at 4.3 kn through the water. At 1240 a new fix puts you 029°T, 3.5 nm from Heron Point Light.

   Plot the 1240 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 80 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1500 your fix is 008°T, 1.6 nm from Westfield church spire. You steer 115°T at 7.3 kn through the water. At 1530 a new fix puts you 256°T, 3.4 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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn