Worksheet 716 · 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 1005 your fix is 162°T, 1.5 nm from Gannet Rock daybeacon. You steer 279°T at 4.6 kn through the water. At 1040 a new fix puts you 259°T, 2.1 nm from Gannet Rock daybeacon.

   Plot the 1040 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 0945 your fix is 353°T, 2.6 nm from Mill stack. You steer 298°T at 4.2 kn through the water. At 1020 a new fix puts you 109°T, 2.0 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  

3. At 1005 your fix is 072°T, 1.9 nm from Westfield church spire. You steer 079°T at 6.5 kn through the water. At 1035 a new fix puts you 263°T, 2.1 nm from Tern Island tower.

   Plot the 1035 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 1315 your fix is 303°T, 3.5 nm from Tern Island tower. You steer 197°T at 4.3 kn through the water. At 1345 a new fix puts you 273°T, 3.6 nm from Tern Island tower.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1020 your fix is 047°T, 2.0 nm from Heron Point Light. You steer 003°T at 4.0 kn through the water. At 1145 a new fix puts you 062°T, 3.6 nm from Westfield church spire.

   Plot the 1145 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 85 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 1225 your fix is 021°T, 2.2 nm from Tern Island tower. You steer 258°T at 4.1 kn through the water. At 1340 a new fix puts you 296°T, 3.9 nm from Tern Island tower.

   Plot the 1340 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 75 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 0835 your fix is 039°T, 2.6 nm from Heron Point Light. You steer 101°T at 5.3 kn through the water. At 0905 a new fix puts you 257°T, 2.7 nm from Gannet Rock daybeacon.

   Plot the 0905 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 1335 your fix is 030°T, 2.9 nm from Westfield church spire. You steer 134°T at 4.3 kn through the water. At 1445 a new fix puts you 001°T, 3.1 nm from Mill stack.

   Plot the 1445 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