I think that the "swab the deck" quest is from kRO and the corresponding quest from iRO is "suspicious beach".
See https://rathena.svn.sourceforge.net/svnroot/rathena/trunk/db/pet_db.txt
// Brasilis Quest - Suspicious Beach [uNHATCHABLE]
2057,E_CRAMP,Strange Cramp,12408,6221,0,0,0,0,0,0,0,0,50,0,0,0,350,400,800,{},{} // kRO version
2081,E_HYDRA,Strange Hydra,12408,6221,0,0,0,0,0,0,0,0,50,0,0,0,350,400,800,{},{} // iRO/cRO version
Nevermind, i have changed the pet_db and now using both quests on our server, with little changes and translations. ^^