Originally Posted by sunchaser
The FPB designers, owners and builder are not aware of your oft mentioned "pitching problem" I will say though that in short period 8+ foot seas many fat body vessels I've been on - pitch. Seems that all boats do, in fact I saw a video of a tanker...oh what the heck...
I tend to agree. I think she was cruising really quite flat in the second video, and in the first, considering the speed she was going and the severity of the seaway, chosen deliberately to test speed in nasty stuff, (taken off Auckland, I think, where she was made), the pitching while definitely occurring, would not have felt that bad where the crew are stationed.
You need to take into account she was built purposely with light ends, with most mass in the centre, which is where the crew are also. The pitching then rotates round that centre of mass so as to reduce high speed pounding in the ends, when the sea state and speed overcome her slice through the waves ability. Works a bit like the way that rolling is less noticeable the lower in the boat one goes, so nearer to the centre of lateral rotation. That's my take on her anyway.