Pictures on the Ral Partha Europe site of their 'Empire' fleet looked promising and were pretty cheap.
They arrived today and I am delighted with them. Lovely clean casts, well proportioned. They are quite small, the Galleas is about 3cm long, the Galleon about 35mm. Sails are moulded onto separate masts. The cogs are ideal for late medieval while the galleon and Galleas look a bit later. I'm no naval expert, but I would say 16th century. Very happy with these.