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Andy T

1993 Robalo 2120

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Hi everyone.  I’m new to this forum and also new to boat. I just bought this boat (1993 /2120) from Florida. I’m from California so we fish with live sardines and squid so I installing a fiberglass bait tank behind the lean post, I drill a holl on the transom to install a thru hull but I surprised that the transom are hollow. It has one layer of gel coat with fiberglass (1/4 inch thick) and 1/2 empty space and then plywood (1/4inch thick) and hollow again and then fiberglass wall for the inside wall also only 1/4 inch thick. In between the layers I see they stuffed with some kind of paper. I knock it on the other side of the outboard and it sound like hollow too. Do any one know anything about this? Please let me know. Thank you very much. Sorry for my broken English. 

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