Worksheet 327 · 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 103°T, 2.1 nm from Westfield church spire. You steer 116°T at 5.5 kn through the water. At 1505 a new fix puts you 210°T, 2.5 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 1555 your fix is 034°T, 3.2 nm from Heron Point Light. You steer 106°T at 5.7 kn through the water. At 1635 a new fix puts you 236°T, 1.2 nm from Gannet Rock daybeacon.

   Plot the 1635 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 134°T, 1.7 nm from Westfield church spire. You steer 019°T at 8.7 kn through the water. At 0955 a new fix puts you 042°T, 4.4 nm from Westfield church spire.

   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 1330 your fix is 117°T, 1.7 nm from Gannet Rock daybeacon. You steer 267°T at 7.2 kn through the water. At 1405 a new fix puts you 256°T, 2.3 nm from Gannet Rock daybeacon.

   Plot the 1405 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 1355 your fix is 293°T, 2.2 nm from Kittle water tank. You steer 072°T at 4.9 kn through the water. At 1430 a new fix puts you 061°T, 1.8 nm from Kittle water tank.

   Plot the 1430 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  

6. At 1425 your fix is 063°T, 3.0 nm from Westfield church spire. You steer 115°T at 5.5 kn through the water. At 1500 a new fix puts you 243°T, 3.0 nm from Tern Island tower.

   Plot the 1500 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  

7. At 1555 your fix is 264°T, 2.2 nm from Gannet Rock daybeacon. You steer 045°T at 8.9 kn through the water. At 1625 a new fix puts you 070°T, 2.9 nm from Tern Island tower.

   Plot the 1625 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 0930 your fix is 025°T, 2.8 nm from Westfield church spire. You steer 125°T at 7.2 kn through the water. At 1040 a new fix puts you 203°T, 1.6 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 70 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn