The „dice have it“ .. coloured dice to represent hit points of damage .. six hits and you are dead. Double attacks from flank and rear. Working on the principle of one ship per model (aka „not squadrons“) there  is a maelstrom of ramming and mad manoeuvre (see below, this Athenian started the day extremely confident but ended the day clinging to the wreck of his trireme with his gloating Spartan son sailing on – the Fates are extremely fickle):   

Seeking easier prey, I called on my friend, we’ll call him „Dave“ – who always loses in the most sportsmanlike way, so I laid a trap for him (see below, I gave him plenty of Spartan triremes to surround my defensive circle of Athenians in a prickly „kyklos“ formation):  

All I had to do was survive for a set number of turns until the rest of the Athenian fleet turned up and scared the Peloponnesians away, simple. As the unwary Spartans approached I decided I would sprint out at them, like a released coiled spring (see below, unleash watery hell!): 

Except Dave had not read the script and biffed me up before the rest of the Athenians had time to turn up. Perhaps I should have waited more patiently for the attack to bounce off my prows and then I could have taken the unwary Peloponnesians in the flank or rear quarter as they drifted past in disarray (see below, as it was I traded blows and came off far worst, swimming home again): 

Sigh, I retain my 100% ancient naval record, the only way now being up. All hail to Dave the Navarch, I now tremble in your wake or rather swim pathetically!

Rules: Er, yes, there were some, sort of. I was going to play using a set called „One Hour Ancient Naval“ (by „somebody“) whose name escapes me. However I had to roughly translate the movement in inches to hexes and related the up to 45 degree turns into a number of hex sides. I then slimmed everything down to do triremes only (Romans really liked boarding and shooting a lot), so the rules were a back of the fag packet and a bit in my head, so yes I kludged them together and called them in as I saw fit. The result being I pulled in rules from of things I had read historically or I think were in one of the many other ancient trireme rule sets I have previously read … and so, the result was that I still lost, if I may say so in the finest of style and Dave managed his fourteenth game in a month 😉