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Seakeeping Results
•Evaluate response in regular seas; varying ship speeds and headings. •Within linear theory, evaluate response in random seas using regular wave results.
•Assume long-crested, fully developed seas.
•Set limiting values of the response and calculate the operating envelope. •Adjust design parameters to achieve an acceptable operating envelope.
The procedure we followed in the seakeeping evaluation of our design is summarized here:
Ship response in waves is evaluated using two-dimensional, strip theory, hydrodynamics.
First, we evaluate the response in regular sinusoidal waves and then we proceed we random wave calculations.
We assume a Pierson-Moskowitz sea spectrum.
We evaluate the response in these random seas, and we set our limiting values for the response.
Finally, we adjust our design parameters so that the limiting values are not exceeded for the majority of sea headings and ship speeds.