Pirate Ship Interior is a timed zone in the Battle Arena. you can only get to it and from it to the Pirate Ship zone (required rank 70). after 90 minutes in this zone you will be teleported to Ye Olde Pub.
There's also a black square, leading to the Censored Departure with no monsters, where are you teleported to the Censor Ship after some time.
|Monster||Type||Level (Casual)||Level (Hardcore)|
|Treasure Chest||Dark Evolving||1800|
|Another Chest||Dark Evolving||1800|
|Blue Ghost||Water Boss Undead Evolving||1900|
|Green Ghost||Wind Boss Undead Evolving||1950|
|Red Ghost||Fire Boss Undead Evolving||2000|
|Super Ghost||Dark Boss Undead||2300|
|Base Spawn Rate||1.8 seconds|
|Base IA Drop Rate||10%|
|Area Rare Rate||3%|
|Area Epic Rate||0.2% (1% in Worst Moon)|