Worksheet 272 · 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 1155 your fix is 006°T, 1.1 nm from Kittle water tank. You steer 307°T at 4.4 kn through the water. At 1320 a new fix puts you 023°T, 1.9 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 85 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

2. At 1140 your fix is 205°T, 2.7 nm from Tern Island tower. You steer 232°T at 6.3 kn through the water. At 1210 a new fix puts you 073°T, 1.2 nm from Heron Point Light.

   Plot the 1210 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 1430 your fix is 029°T, 2.8 nm from Gannet Rock daybeacon. You steer 246°T at 5.2 kn through the water. At 1505 a new fix puts you 186°T, 1.6 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 35 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1225 your fix is 059°T, 2.3 nm from Heron Point Light. You steer 349°T at 4.4 kn through the water. At 1300 a new fix puts you 092°T, 3.6 nm from Westfield church spire.

   Plot the 1300 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 1055 your fix is 271°T, 3.4 nm from Tern Island tower. You steer 290°T at 7.9 kn through the water. At 1125 a new fix puts you 010°T, 3.2 nm from Westfield church spire.

   Plot the 1125 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 1125 your fix is 053°T, 3.1 nm from Westfield church spire. You steer 292°T at 4.0 kn through the water. At 1200 a new fix puts you 012°T, 3.5 nm from Westfield church spire.

   Plot the 1200 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 1030 your fix is 120°T, 1.5 nm from Westfield church spire. You steer 073°T at 4.3 kn through the water. At 1110 a new fix puts you 226°T, 2.6 nm from Tern Island tower.

   Plot the 1110 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 0710 your fix is 245°T, 2.3 nm from Gannet Rock daybeacon. You steer 301°T at 6.0 kn through the water. At 0820 a new fix puts you 080°T, 1.0 nm from Westfield church spire.

   Plot the 0820 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