Is there a word on scale? That is, which sizes are assumed for models, bases and playing area?
You can use any scale and any bases. There are recommendations for three scales concerning the distances, one set if you use a playing area of 50cmx50cm (which would probably work best with 1/2400 or smaller ships), one set for an area of 90cmx90cm and one for an area of 120cmx120cm (Ganesha Games rules always use a set of three measuring sticks for short, medium and long distances). Those are minimum playing areas, larger ones are recommended.
The game recommends games of 50 to 200 points, which would be 1 to 6 or 7 ships per player I guess.