Worksheet 426 · 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 0715 your fix is 358°T, 2.0 nm from Heron Point Light. You steer 150°T at 4.5 kn through the water. At 0750 a new fix puts you 097°T, 2.0 nm from Heron Point Light.

   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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1520 your fix is 296°T, 1.5 nm from Tern Island tower. You steer 198°T at 4.3 kn through the water. At 1615 a new fix puts you 327°T, 1.5 nm from Mill stack.

   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 55 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

3. At 1150 your fix is 235°T, 1.6 nm from Gannet Rock daybeacon. You steer 321°T at 8.6 kn through the water. At 1220 a new fix puts you 292°T, 2.7 nm from Tern Island tower.

   Plot the 1220 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 1320 your fix is 139°T, 1.7 nm from Westfield church spire. You steer 004°T at 5.3 kn through the water. At 1415 a new fix puts you 296°T, 4.1 nm from Tern Island tower.

   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 55 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 0845 your fix is 053°T, 1.6 nm from Tern Island tower. You steer 119°T at 7.4 kn through the water. At 0915 a new fix puts you 038°T, 3.4 nm from Gannet Rock daybeacon.

   Plot the 0915 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 1440 your fix is 030°T, 2.8 nm from Kittle water tank. You steer 322°T at 4.3 kn through the water. At 1545 a new fix puts you 040°T, 2.2 nm from Gannet Rock daybeacon.

   Plot the 1545 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 0935 your fix is 261°T, 2.2 nm from Tern Island tower. You steer 188°T at 4.1 kn through the water. At 1035 a new fix puts you 036°T, 1.5 nm from Heron Point Light.

   Plot the 1035 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 0700 your fix is 010°T, 1.5 nm from Tern Island tower. You steer 264°T at 5.4 kn through the water. At 0730 a new fix puts you 306°T, 2.8 nm from Tern Island tower.

   Plot the 0730 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