So, what you want to do? You want to make sure T heave is far away from that typical
wave period, it is about 25 second, 25 second is equal to, 20 second is equal to a wave of
something like kilometer long, that does not occurred, you know mostly the waves that,
what is used in offshore, as every day wave is about 100 to 300 meter long, 8 to 12
second or 14 second period, 20 second waves or 25 second wave do not occur very
much. So, your idea is here that you design a structure so that its natural period is far
away from the usually occurring waves, so it is like you make it 25 seconds.