We are busy wrapping the melee combat for the captain and now we are looking at upgradable swords/weapons in Man O' War: Corsair. We thought a Leviathan tooth sword with additional damage as an idea, perhaps causes panic due to the fact you had to kill a Leviathan to get it!
What would you like to see?
Its a fantasy world. There could be tons of possibilities. The L. tooth is great. There could be weapons from legendary captains of past ages or holy/unholy weapons so dangerous they must be pieced together or re-granted by the gods.
As for weapon types of course traditional Sabers, Rapiers type of swords. Long-, broad-, bastardswords would be great too, Two-Handed had always a soft spot with me but might be rather unusual in a seafaring setting.