Worksheet 356 · 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 1535 your fix is 111°T, 1.2 nm from Gannet Rock daybeacon. You steer 032°T at 5.6 kn through the water. At 1615 a new fix puts you 068°T, 3.1 nm from Gannet Rock daybeacon.

   Plot the 1615 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 1345 your fix is 072°T, 4.2 nm from Tern Island tower. You steer 159°T at 5.1 kn through the water. At 1415 a new fix puts you 052°T, 3.9 nm from Gannet Rock daybeacon.

   Plot the 1415 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 1155 your fix is 288°T, 4.0 nm from Tern Island tower. You steer 156°T at 5.1 kn through the water. At 1250 a new fix puts you 350°T, 3.1 nm from Mill stack.

   Plot the 1250 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  

4. At 0810 your fix is 161°T, 1.5 nm from Tern Island tower. You steer 254°T at 4.2 kn through the water. At 0845 a new fix puts you 213°T, 3.0 nm from Tern Island tower.

   Plot the 0845 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 1545 your fix is 007°T, 1.2 nm from Kittle water tank. You steer 302°T at 4.1 kn through the water. At 1710 a new fix puts you 230°T, 2.7 nm from Tern Island tower.

   Plot the 1710 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 1455 your fix is 067°T, 2.8 nm from Heron Point Light. You steer 070°T at 5.0 kn through the water. At 1600 a new fix puts you 028°T, 2.6 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 65 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 0740 your fix is 039°T, 4.6 nm from Gannet Rock daybeacon. You steer 271°T at 6.5 kn through the water. At 0830 a new fix puts you 017°T, 2.1 nm from Tern Island tower.

   Plot the 0830 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 1140 your fix is 004°T, 1.4 nm from Gannet Rock daybeacon. You steer 047°T at 4.3 kn through the water. At 1230 a new fix puts you 043°T, 4.8 nm from Gannet Rock daybeacon.

   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 50 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn