Valkyrien Seas is the quintesential pirate modpack. Using Valkyrien Skies (and its addons) you and your crew can take to the sea and plunder to your heart's content! Muskets, mobs with guns, villager recruits whose services are for sail, pirate swords, it's all here.
Valkyrien Seas is recommended to be used with friends (or foes!). No pirate is a true pirate without a crew- and another pirate crew to battle.
Pillagers and skeletons will spawn with guns. Zombies will spawn with armor and weapons. Mobs will utilize the Better Combat system. When sailing, look out for what lies beneath the surface...