Worksheet 124 · 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 1420 your fix is 061°T, 3.4 nm from Westfield church spire. You steer 150°T at 7.3 kn through the water. At 1455 a new fix puts you 060°T, 2.2 nm from Heron Point Light.

   Plot the 1455 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  

2. At 0755 your fix is 101°T, 1.3 nm from Westfield church spire. You steer 091°T at 4.8 kn through the water. At 0825 a new fix puts you 082°T, 2.9 nm from Westfield church spire.

   Plot the 0825 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  

3. At 0805 your fix is 266°T, 2.8 nm from Gannet Rock daybeacon. You steer 290°T at 5.0 kn through the water. At 0850 a new fix puts you 087°T, 2.5 nm from Westfield church spire.

   Plot the 0850 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  

4. At 1250 your fix is 039°T, 1.1 nm from Kittle water tank. You steer 334°T at 8.3 kn through the water. At 1335 a new fix puts you 048°T, 2.5 nm from Tern Island tower.

   Plot the 1335 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 1540 your fix is 073°T, 4.5 nm from Tern Island tower. You steer 233°T at 5.9 kn through the water. At 1635 a new fix puts you 134°T, 2.9 nm from Tern Island tower.

   Plot the 1635 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 1120 your fix is 272°T, 2.8 nm from Tern Island tower. You steer 147°T at 5.5 kn through the water. At 1150 a new fix puts you 215°T, 2.9 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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1025 your fix is 170°T, 1.1 nm from Gannet Rock daybeacon. You steer 028°T at 6.2 kn through the water. At 1115 a new fix puts you 034°T, 4.0 nm from Gannet Rock daybeacon.

   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 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1100 your fix is 248°T, 3.6 nm from Tern Island tower. You steer 249°T at 6.4 kn through the water. At 1135 a new fix puts you 345°T, 1.3 nm from Heron Point Light.

   Plot the 1135 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