What does the Hunter event Raging Seas mean when it states that it remains for two full turns?When Mina Harker plays it,at the end of her turn one full turn has ended or one full turn means from the start of a player's turn to the end of the same player's next turn?

Thanks in advance!

Full turn is like full turn From the point you were playing such card to the exact point in the next turn. So if Mina plays it after her movoe the the effect will fade off two turns later after Mina's move.