Watercraft Alignment Structure for Removable Battery and Propulsion Modules

The patent divides the propulsion system into separable modules - the propulsion module can be detached from the watercraft body while maintaining secure connection during operation. The alignment structure provides segmentation by creating distinct mounting zones with proper alignment features, allowing the propulsion module to be replaced independently while ensuring stable mechanical connection when installed.

The alignment structure incorporates preliminary alignment features such as guide rails, positioning ribs, or tapered surfaces that automatically guide the propulsion module into correct position during installation. This preliminary action ensures proper alignment and secure mechanical connection before the module is fully installed, maintaining mechanical stability without requiring complex fastening mechanisms.

The alignment structure serves as an intermediary component that absorbs the requirement for high precision alignment. Instead of requiring the floatation body to be manufactured with strict tolerances, the alignment structure is designed with precise alignment features that compensate for variations in the floatation body dimensions. This transfers the precision requirement from the floatation body manufacturing to the alignment structure, which can be manufactured separately with standard tolerances.

The patent employs parameter changes in the alignment structure design, such as using adjustable alignment features, compliant mounting elements, or self-aligning geometries. These parameter changes allow the system to accommodate variations in floatation body dimensions while maintaining proper alignment, thereby eliminating the need for strict manufacturing tolerances on the floatation body.