John Richardson 
Handbook of the Roman Imperial Navy [EPUB ebook] 
Organisation of the Roman Imperial Navy

This rich history of the Roman Imperial Navy and the sailors who manned their fleets deserve to be fully acknowledged. Most know that the legions of Rome fought and defended the Roman Empire but without their Imperial Navy this empire may never have been able to expand its frontier’s This book well researched covers the organisation of the Imperial navy its ships plus both officer’s and crews.