Worksheet 897 · 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 1410 your fix is 299°T, 3.6 nm from Tern Island tower. You steer 161°T at 5.7 kn through the water. At 1505 a new fix puts you 229°T, 2.5 nm from Gannet Rock daybeacon.

   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 55 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1510 your fix is 034°T, 1.1 nm from Kittle water tank. You steer 344°T at 4.0 kn through the water. At 1630 a new fix puts you 092°T, 1.6 nm from Tern Island tower.

   Plot the 1630 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 80 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 1040 your fix is 083°T, 1.2 nm from Westfield church spire. You steer 070°T at 6.6 kn through the water. At 1135 a new fix puts you 016°T, 1.4 nm from Tern Island tower.

   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 55 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1010 your fix is 308°T, 3.3 nm from Tern Island tower. You steer 188°T at 5.8 kn through the water. At 1100 a new fix puts you 047°T, 3.2 nm from Heron Point Light.

   Plot the 1100 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  

5. At 1500 your fix is 104°T, 1.8 nm from Tern Island tower. You steer 135°T at 5.1 kn through the water. At 1555 a new fix puts you 036°T, 2.1 nm from Kittle water tank.

   Plot the 1555 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 0720 your fix is 308°T, 2.5 nm from Tern Island tower. You steer 081°T at 6.2 kn through the water. At 0825 a new fix puts you 035°T, 4.2 nm from Gannet Rock daybeacon.

   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 65 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

7. At 1505 your fix is 040°T, 2.1 nm from Tern Island tower. You steer 140°T at 5.8 kn through the water. At 1550 a new fix puts you 078°T, 1.8 nm from Gannet Rock daybeacon.

   Plot the 1550 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  

8. At 1205 your fix is 047°T, 1.3 nm from Kittle water tank. You steer 005°T at 6.4 kn through the water. At 1310 a new fix puts you 073°T, 4.3 nm from Tern Island tower.

   Plot the 1310 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