This document establishes the complete design, engineering, and execution basis for the ST72 project: the conception, development, construction, and operation of a seventy-two-foot trimaran intended for a solo, nonstop circumnavigation. It consolidates the philosophical foundations, technical rationale, design decisions, structural principles, system architectures, risk considerations, and operational assumptions that govern the project from inception through completion and return.
The Plan is not a promotional document. It is a design authority and decision record. Its purpose is to articulate why specific choices were made, how those choices translate into engineering and operational discipline, and where responsibility, risk, and uncertainty are explicitly acknowledged rather than deferred. The document integrates narrative context with formal engineering logic to ensure coherence between human endurance, vessel behaviour, and long-duration exposure to the ocean environment.
This work is structured into sequential Parts that progress from philosophical foundations to detailed engineering intent that capture analysis, comparative evaluations, risk, passage planning frameworks, certification considerations, and deferred integration items. Together, they form a single reference framework intended to support design finalisation, construction, review, sponsorship engagement, risk governance, and execution planning.
This document is issued as a living technical record. While its core philosophy and primary design intent are fixed, specific sections will evolve as detailed design, construction, trials, and operational preparations progress. All revisions are controlled through a formal revision system to preserve traceability, accountability, and alignment across stakeholders.