Introduction to R & P

Resistance and Propulsion of Ships

Preliminary propeller design using charts

Introduction to R & P

  Example 3

Resistance and Propulsion of Ships

Fishing vessel

Use the K-J chart to select the appropriate P/D ratio for a B4-70 screw to be used for this vessel.

Estimate open water efficiency.

Introduction to R & P

  Example 4

Resistance and Propulsion of Ships

Harbor tug

Use the µ-σ chart to select the appropriate P/D ratio for a B4-70 screw to be used for this vessel.

Estimate open water efficiency.