Worksheet 563 · 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 1255 your fix is 108°T, 2.5 nm from Westfield church spire. You steer 086°T at 8.6 kn through the water. At 1350 a new fix puts you 018°T, 1.5 nm from Gannet Rock daybeacon.

   Plot the 1350 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  

2. At 1325 your fix is 027°T, 2.4 nm from Kittle water tank. You steer 263°T at 6.2 kn through the water. At 1420 a new fix puts you 027°T, 2.4 nm from Mill stack.

   Plot the 1420 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  

3. At 0910 your fix is 061°T, 3.1 nm from Tern Island tower. You steer 285°T at 4.1 kn through the water. At 0940 a new fix puts you 015°T, 2.5 nm from Tern Island tower.

   Plot the 0940 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 0915 your fix is 341°T, 1.9 nm from Tern Island tower. You steer 122°T at 5.0 kn through the water. At 1010 a new fix puts you 039°T, 2.9 nm from Gannet Rock daybeacon.

   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 55 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1355 your fix is 266°T, 2.1 nm from Tern Island tower. You steer 306°T at 5.2 kn through the water. At 1440 a new fix puts you 029°T, 4.2 nm from Westfield church spire.

   Plot the 1440 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  

6. At 1005 your fix is 246°T, 2.3 nm from Tern Island tower. You steer 268°T at 5.0 kn through the water. At 1055 a new fix puts you 113°T, 1.3 nm from Westfield church spire.

   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 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1120 your fix is 236°T, 2.9 nm from Tern Island tower. You steer 186°T at 5.1 kn through the water. At 1155 a new fix puts you 342°T, 2.4 nm from Mill stack.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1310 your fix is 027°T, 2.9 nm from Westfield church spire. You steer 171°T at 6.4 kn through the water. At 1345 a new fix puts you 098°T, 2.1 nm from Westfield church spire.

   Plot the 1345 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