Worksheet 37 · 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 0935 your fix is 041°T, 3.0 nm from Gannet Rock daybeacon. You steer 335°T at 5.9 kn through the water. At 1005 a new fix puts you 050°T, 3.9 nm from Tern Island tower.

   Plot the 1005 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  

2. At 1155 your fix is 335°T, 2.4 nm from Tern Island tower. You steer 218°T at 8.1 kn through the water. At 1235 a new fix puts you 024°T, 3.2 nm from Heron Point Light.

   Plot the 1235 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 1010 your fix is 081°T, 3.6 nm from Westfield church spire. You steer 139°T at 5.8 kn through the water. At 1055 a new fix puts you 011°T, 2.2 nm from Mill stack.

   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 45 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

4. At 1535 your fix is 038°T, 3.5 nm from Heron Point Light. You steer 093°T at 7.9 kn through the water. At 1615 a new fix puts you 024°T, 1.9 nm from Gannet Rock daybeacon.

   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 40 minutes).

   Tolerance: 4° and 0.15 kn.

   Set: ________ °T   Drift: ________ kn  

5. At 1520 your fix is 048°T, 1.7 nm from Westfield church spire. You steer 044°T at 5.9 kn through the water. At 1550 a new fix puts you 291°T, 3.9 nm from Tern Island tower.

   Plot the 1550 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 1155 your fix is 093°T, 1.6 nm from Tern Island tower. You steer 153°T at 8.9 kn through the water. At 1230 a new fix puts you 022°T, 1.6 nm from Kittle water tank.

   Plot the 1230 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 1245 your fix is 077°T, 1.2 nm from Heron Point Light. You steer 348°T at 7.0 kn through the water. At 1330 a new fix puts you 051°T, 3.5 nm from Westfield church spire.

   Plot the 1330 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  

8. At 0845 your fix is 149°T, 1.5 nm from Tern Island tower. You steer 229°T at 4.0 kn through the water. At 1005 a new fix puts you 061°T, 2.0 nm from Mill stack.

   Plot the 1005 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