If you have a shower sump check to make sure the pump is working and the sump os not plugged..... But yes, a little more info on the type of boat would help.
Thank you for your message. Your correct the shower sub pump was not working. We replaced it. We then discovered the wet spot was tap/shower hose had disconnected. We have a 32 ft., 1994 Maxum sports cruiser . New to us.