Worksheet 880 · 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 1425 your fix is 272°T, 3.2 nm from Tern Island tower. You steer 072°T at 8.7 kn through the water. At 1505 a new fix puts you 058°T, 4.5 nm from Tern Island tower.

   Plot the 1505 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 1330 your fix is 103°T, 1.7 nm from Tern Island tower. You steer 227°T at 6.4 kn through the water. At 1410 a new fix puts you 345°T, 2.2 nm from Mill stack.

   Plot the 1410 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 0925 your fix is 304°T, 4.1 nm from Tern Island tower. You steer 104°T at 5.1 kn through the water. At 0955 a new fix puts you 319°T, 2.7 nm from Tern Island tower.

   Plot the 0955 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 1150 your fix is 127°T, 1.7 nm from Gannet Rock daybeacon. You steer 292°T at 8.1 kn through the water. At 1230 a new fix puts you 218°T, 3.3 nm from Tern Island tower.

   Plot the 1230 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  

5. At 0925 your fix is 021°T, 2.3 nm from Gannet Rock daybeacon. You steer 178°T at 8.1 kn through the water. At 0955 a new fix puts you 313°T, 1.3 nm from Kittle water tank.

   Plot the 0955 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 0910 your fix is 149°T, 1.0 nm from Gannet Rock daybeacon. You steer 252°T at 4.4 kn through the water. At 1005 a new fix puts you 024°T, 1.8 nm from Mill stack.

   Plot the 1005 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  

7. At 1355 your fix is 069°T, 4.2 nm from Tern Island tower. You steer 270°T at 5.5 kn through the water. At 1425 a new fix puts you 039°T, 2.7 nm from Tern Island tower.

   Plot the 1425 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  

8. At 1120 your fix is 062°T, 2.3 nm from Westfield church spire. You steer 195°T at 4.9 kn through the water. At 1155 a new fix puts you 128°T, 1.9 nm from Westfield church spire.

   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