Worksheet 552 · 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 1305 your fix is 192°T, 1.2 nm from Tern Island tower. You steer 292°T at 6.4 kn through the water. At 1340 a new fix puts you 063°T, 3.6 nm from Westfield church spire.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1310 your fix is 043°T, 2.9 nm from Heron Point Light. You steer 025°T at 5.0 kn through the water. At 1400 a new fix puts you 307°T, 2.7 nm from Tern Island tower.

   Plot the 1400 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  

3. At 1125 your fix is 090°T, 1.3 nm from Heron Point Light. You steer 004°T at 8.0 kn through the water. At 1205 a new fix puts you 284°T, 3.5 nm from Tern Island tower.

   Plot the 1205 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  

4. At 0720 your fix is 047°T, 2.4 nm from Mill stack. You steer 059°T at 6.9 kn through the water. At 0750 a new fix puts you 108°T, 1.5 nm from Gannet Rock daybeacon.

   Plot the 0750 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 1250 your fix is 006°T, 3.3 nm from Westfield church spire. You steer 129°T at 7.7 kn through the water. At 1410 a new fix puts you 331°T, 1.0 nm from Kittle water tank.

   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 80 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

6. At 0930 your fix is 044°T, 2.9 nm from Tern Island tower. You steer 261°T at 7.4 kn through the water. At 1015 a new fix puts you 036°T, 3.6 nm from Westfield church spire.

   Plot the 1015 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  

7. At 1220 your fix is 008°T, 2.6 nm from Westfield church spire. You steer 120°T at 4.4 kn through the water. At 1320 a new fix puts you 269°T, 1.6 nm from Tern Island tower.

   Plot the 1320 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 60 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

8. At 1240 your fix is 055°T, 2.1 nm from Tern Island tower. You steer 146°T at 7.5 kn through the water. At 1310 a new fix puts you 079°T, 1.7 nm from Gannet Rock daybeacon.

   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 30 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn