I have this boat. Need to replace the batteries but not sure if it's a 24 or 27. It's an hour drive to my boat, so I need some help. I searched the forum but couldn't find anything. I also checked the owners manual to no avail. I'm looking at the interstate ones here: http://www.interstatebatteries.com/m/category/marine/deepcycle
Pic of the engine is here: http://i.imgur.com/e0wBqD0.jpg
Pic of the engine is here: http://i.imgur.com/e0wBqD0.jpg