The Vessel Type is a climate-responsive architectural typology that integrates sustainable water management, material efficiency, and social infrastructure. Designed for western Madagascar, it captures, filters, and stores rainwater to support year-round access for agriculture and domestic use. It addresses the impacts of seasonal droughts and floods. The structure doubles as a communal space for gathering, education, and cultural exchange. Built with low-carbon, locally sourced materials such as compressed earth and timber, it minimizes embodied energy and supports local economies. Its site-adaptable design enables replication across regions with similar climate challenges. By combining circular resource use and resilient community programming, The Vessel Type functions as both critical infrastructure and a catalyst for social equity and ecological regeneration.