Notice the unusual hull shape of the Dreadnaught.
Now notice its riding attitude on the occasion of this photo shoot. The same as the Seaview on many occasions.
I have seen the same attitude in model boats and subs before. If you give them too much throttle they will tend to do that, dig a hole in the water if you will. Perhaps thats what Irwin Allen had in mind. On a submarine designed like the Seaview a lot of emphasis was placed on visual contact, so this attitude could have been adopted to uncover the windows as it were to assist in visual confirmation. You will recall that there is someone constantly on station at a post just behind those windows in the pilot film and in the first season. As a full size boater I have noticed that the same thing occurs when a boat comes off plane,the stern drops off first, then the bow.
There are OLD pilots and there are BOLD pilots but there are very few OLD BOLD pilots. MAG