So, I am now going to go back, back to our strip this thing. The natural period discussion T z part, because we need to have an idea, physical idea regarding these values m plus a z by c z and I can write this to be; actually, we can write this to be m 1 plus that
coefficient, added mass coefficient; what do I call it? Let me call it a bar z. Remember, a bar z is added mass coefficient, that is mass into a bar z gives you; now, let further work we can work it out for a typical ship; let me work it out for a typical ship. We will work it out for different thing, but let us work it for typical ship. What is my mass? 2 pi, let me write it down basically, it is rho into v; rho into volume. What is volume? l b t into c b.