Frankzett
So should it be impressive or do you want to show a characteristic ancient sea battle?
It should be historically accurate and in many ways Mylae was
not a "characteristic" ancient sea battle.
1. It was the first battle of an entirely Roman fleet. Oarman were trained mainly on land, navigational skills of the crew was not up to Carthaginian levels, even the Roman commander was an infantry officer. Therefore the chance of beating a veteran Carthaginian fleet are not the best. The corvus was the only way to achieve surprise and - as we now know - worked extremely well and lead to the destruction and fleet of the Carthaginians.
2. The fleets met by accident. To lay down the mast takes some time. If the time for this operation is sufficent if both fleets attacked immediately is a matter of speculation. These ships were fast - very fast! Up to a modern double 8 rowing boat! The ships were not very stable, so this is also an additional time delay. Therefore it is most likely that the masts are not down. Maybe the sails could be down and thrown over board, as a Roman galley has a very limited space for stowing.
3. A characteristic ancient sea battle is indeed in modern eyes a little strange. When the fleets sighted each other normally all ships landed on the nearest shore, lay down masts and sails, remove all moveable parts and then go back to sea and form battle order. Then the fleets close to make contact and try to ram or board the enemy. In large formations there is little space for manouvering so its quite a carnage and close combat occurs. Much detail of used tactics, equipment, etc. is lost to us over the centuries.
4. Roman ships had additional infantry on board. So the ship is much heavier than a Carthaginian. Maybe the sails are used to increase speed. When boarding over the corvus, these additional soldiers can make the difference.
5. Even a Roman quinquereme can possibly have only 2 of oars (some experts stating perhaps only 1 row). Quinquereme means only that in each section five oarmen are doing their job. If this is 2-2-1 (3 rows) or 3-2 (2 rows) or only 5 (1 row) is a matter of endless disputes.
For further information check these books:
Viereck, H.D.L.: Classis Romana - die römische Flotte (I don't know if there is an English version)
Gardiner, Robert: The age of the galley
So a Roman ship of Mylae can look quite like this (command ship, no corvus):
Greetings from Austria
Thomas