Good morning, see today’s lecture is titled Ship Motion in Regular Waves. Earlier, we
have spoken about regular waves, we have followed that by irregular waves. Of course,
before I go to that, I want to speak little more on irregular sea still, which, we did last
class, but some carried over stuff I want to continue. See we mention that irregular sea is
given by what is meant a spectrum, frequency domain, energy spectrum looking like this.
Now, it turns out I was just mentioning in last class that, there are a large number of so
called theoretical spectrum available, what does it mean.