MINOR will include all smaller ships up to a hemiolia. Tight turning.
TRIREME will cover the Trihemiolia and Trireme. ALso quite tight turners.
MAJOR includes 4's, 5's and 6's which the Romans called nava majoris.
ALEXANDRINE is my term for the larger ships invented by Alexander and Successors
Having drawn up the templates using a variety of sources on naval architecture I am happy with them.
The MINOR ships can get round more than 90 degrees in one move segment.
The Trireme class make 90 degrees.
The MAJOR can make about 60 degrees.
Alexandrines 45 degrees subject to somemore research.