When reading sources talking about Ancient navies in places like Athens or Rome, authors tend to just mention numbers of ships rather than amounts of men. Often, the number of ships in a navy seems to be very small, but despite this, these navies often engage with or are shown to be as effective in devastating their enemies as armies that are said to have tens of thousands of men in them, so how many men would be attached to each ship? Would the overall number of men in a navy be similar to a land army in some of these naval powers?
A trireme had a rowing crew of 170, plus about 30 other sailors, officers and marines. In comparison, a Roman quinquereme might have had 300 crew and 120 marines.
So, with a trireme you can probably field 1700 men for every ten ships, while a quinquereme would allow in excess of 3000 men for every ten ships.