I used Poseidon's Warriors from Osprey. They give a good, fast game with a reasonable number of ships. They are not "rivet counters" rules though lacking much of the nuance of galley warfare in preference to keeping the game moving. I like them but YMMV!
I opted to model my galleys without sails, since historically they were left ashore pre-battle. however, having sails can help with identification. I punched out card disks with a hole punch, painted them in squadron colours and labelled them with the number of oar banks the ship had, to help those of my friends who cant tell a cataphract from a catapult!
Images here for anyone interested -
https://imageshack.com/a/FBqr7/1