They must have heard plenty about their welds, by the time they made this one they had Todd Shipyards in NYC weld it up. Yeah, yeah, "artistic" comes to mind. Their brochure mentioned how this sub was a much better deal than the Pieces. This one did pass the 1200' pressure cooker test at Annapolis with ABS cert though. If anything its an inspiration for anyone building from scratch 'cause if this thing won't crush, ...