Boat with folding transom

A collapsible hull boat having a bottom and lateral flanks, further comprising:

• a folding transverse transom fastened to said bottom and lateral flanks by a peripheral bead projecting astern of said boat, said peripheral bead having a lower part corresponding to said bottom, said lower part having an upper face supporting a receptacle;
• and
• a rigid transom board substantially similar in shape to said folding transom when said folding transom is deployed, said rigid transom board being adapted to be attached from the outside of said hull to said deployed transom so as to cover an exterior face of said deployed transom and to be fixed removable to said deployed transom in order to protect said deployed transom and to withstand the force of a motor fixed to said rigid transom board, said rigid transom board having a peripheral rim fitting at least partly around the peripheral contour of said deployed transom and surrounding the parts of said bead corresponding to said lateral flanks, the periphery of said rigid transom board having a lower part able to be received and longitudinally retained by said receptacle.