All welded al the way. A buddy and I were in the bay floundering in the early1990s and a storm came in that was not supose to.It went from flat calm to 4 to 5 ft waves in 20 min our 25 min run turned into 4 1/2 hrs back to the ramp.The bow was caved in almost 7 inches all the way across and I dont think a rivit boat would have stayed together much less afloat through the beating we took that night. I took it to the guy that built it and thanked him for the solid boat and 2 weeks later it was home with 3 extra braces in the bow from the floor to the deck and its still kicken.