Worksheet 394 · 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 0805 your fix is 207°T, 2.4 nm from Gannet Rock daybeacon. You steer 300°T at 6.3 kn through the water. At 0925 a new fix puts you 359°T, 2.5 nm from Westfield church spire.

   Plot the 0925 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  

2. At 0935 your fix is 011°T, 2.2 nm from Tern Island tower. You steer 242°T at 7.3 kn through the water. At 1020 a new fix puts you 254°T, 3.5 nm from Tern Island tower.

   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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 1455 your fix is 042°T, 1.3 nm from Westfield church spire. You steer 176°T at 4.8 kn through the water. At 1530 a new fix puts you 024°T, 1.5 nm from Heron Point Light.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 0935 your fix is 017°T, 1.8 nm from Mill stack. You steer 314°T at 4.6 kn through the water. At 1010 a new fix puts you 038°T, 2.7 nm from Heron Point Light.

   Plot the 1010 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 0700 your fix is 243°T, 3.1 nm from Tern Island tower. You steer 025°T at 5.8 kn through the water. At 0730 a new fix puts you 332°T, 1.8 nm from Tern Island tower.

   Plot the 0730 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  

6. At 1020 your fix is 333°T, 1.5 nm from Kittle water tank. You steer 299°T at 5.5 kn through the water. At 1055 a new fix puts you 007°T, 3.1 nm from Mill stack.

   Plot the 1055 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 0945 your fix is 066°T, 2.2 nm from Heron Point Light. You steer 329°T at 6.6 kn through the water. At 1020 a new fix puts you 098°T, 2.3 nm from Westfield church spire.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1505 your fix is 073°T, 3.2 nm from Tern Island tower. You steer 220°T at 4.7 kn through the water. At 1600 a new fix puts you 321°T, 1.2 nm from Gannet Rock daybeacon.

   Plot the 1600 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