A drive joint for transmission of rotary motion between a drive unit a propeller shaft with a propeller for propulsion of a boat, where the drive joint (1) comprises a flexible joint (3) which is enclosed by a housing (2) and is designed to sustain thrust forces from the propeller during operations. At the exit shaft (4) of the joint (1) an attachment ring (16) is attached at the inner or free end of the shaft (4) and is dimensioned in order to sustain full forces from the propeller during operations. The housing (2) is provided with an opening (17) above the inner or free end of the exit shaft (4) for direct access to the locking ring (16) during assembly and disassembly of the drive joint.