Traveling with your firearm

Does anyone have any idea about carrying your handgun whilst travelling by sea? Specifically when tavelling thru Batangas Port to Or. Mindoro? is there like some special process that needs to be followed? i'm pretty sure they won't just allow you to board a ship with your firearm with you, PTC notwithstanding. i can't seem to get an answer from PPA-Batangas itself (their website may be down). any input  would be appreciated.