A rigid inflatable boat has a structure to position and protect an inflatable tube without having to separate the tube from a boat body. The rigid inflatable boat may include a rubber tube that is attached to each side of a boat body. A folding panel includes one hinged end on each lower side of the boat body and another end including a hook for coupling with a fastener formed on a top portion of the boat body. The rubber tube is connected to an inner surface of the folding panel and a side portion of the boat body by a connection mechanism. The connection mechanism is configured to connect the tube to an inner surface of the folding panel and to the side of the boat body including a pair of guide plates and a pair of insertion bars. The guide plates have one side attached to the inner surface of the moveable plate and the boat body and another side formed with guide grooves disposed longitudinally along the length of boat body. The insertion bars are wrapped with protective fabric and attached to an outer surface of the tube and configured to be inserted longitudinally into the guide grooves.