The Frigate is a kind of fast battleship with vast firepower. Each race has a unique frigate (which differ mostly in appearance).
The Orcish Frigate, unsurprisingly, looks like it has been made and used by orcs. This ship may not look as nimble as other frigades, but it is.
Night Elf Frigate
The Night elven Frigate is a dainty-looking and streamlined ship, but it still has as much firepower as other frigates. It fires ballista bolts.
The Human frigate is a fast wooden ship with metal reinforcements.This section concerns content exclusive to Wrath of the Lich King.
The Undead frigate is a ship with tattered, bloody sails, dark appearance and skulls engravings.