Fastnet Lighthouse is strongest on Isolation 9/10 — Fastnet sits several kilometres beyond an already offshore island and has no ordinary land connection, creating extreme separation from population pressure. It stops short of 10 because it remains a maintained navigational site within reachable coastal waters rather than the highest conceivable geographic separation.. Its clearest scored constraint is Population Capacity 2/10 — The Base is a single narrow lighthouse tower on a small rock. Retained bedrooms, bathroom and welfare space support maintenance teams, but twenty people would be severely constrained in sleeping, sanitation, storage, circulation and operational separation even before long-term supplies are considered..
- Overall
- 6.3/10
- Defensibility
- 7/10
- Isolation
- 9/10
- Sustainability
- 3/10


