Given the problems with hogging and sagging, and the ship building techniques at that time, that’s pretty close to maximum length of a Roman-era vessel. Since everything is intact, I wonder if hogging in heavy seas with a full load didn’t sink her. She would have just filled with water and sunk to the bottom almost intact.
The Romans probably used a trussing system as was originally used in the USS Constitution, as they built ships to carry cargo in the 100s of tons. It would have been nice if the search for that lost Malaysian airliner would have been expanded to the northwestern Indian Ocean and turned up the possible India trade vessels the Romans built and used.
https://freerepublic.com/focus/chat/3985128/posts