Worksheet 752 · 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 1325 your fix is 263°T, 2.4 nm from Gannet Rock daybeacon. You steer 229°T at 4.4 kn through the water. At 1400 a new fix puts you 005°T, 2.5 nm from Mill stack.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1025 your fix is 297°T, 2.9 nm from Tern Island tower. You steer 189°T at 8.3 kn through the water. At 1055 a new fix puts you 066°T, 2.1 nm from Heron Point Light.

   Plot the 1055 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 0850 your fix is 060°T, 1.7 nm from Heron Point Light. You steer 336°T at 5.3 kn through the water. At 0945 a new fix puts you 030°T, 4.1 nm from Westfield church spire.

   Plot the 0945 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 0905 your fix is 034°T, 1.9 nm from Heron Point Light. You steer 116°T at 8.1 kn through the water. At 0935 a new fix puts you 047°T, 1.9 nm from Mill stack.

   Plot the 0935 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 1125 your fix is 105°T, 1.9 nm from Tern Island tower. You steer 237°T at 4.0 kn through the water. At 1155 a new fix puts you 181°T, 1.9 nm from Tern Island tower.

   Plot the 1155 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  

6. At 1045 your fix is 303°T, 1.5 nm from Kittle water tank. You steer 317°T at 4.3 kn through the water. At 1140 a new fix puts you 208°T, 3.0 nm from Tern Island tower.

   Plot the 1140 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  

7. At 1525 your fix is 061°T, 2.2 nm from Heron Point Light. You steer 006°T at 5.6 kn through the water. At 1605 a new fix puts you 276°T, 2.5 nm from Tern Island tower.

   Plot the 1605 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  

8. At 1205 your fix is 352°T, 1.6 nm from Tern Island tower. You steer 254°T at 8.5 kn through the water. At 1250 a new fix puts you 100°T, 1.9 nm from Westfield church spire.

   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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn