Coastal geography continues to influence the delimitation of the continental shelf beyond 200 nautical miles. Two major geographical circumstances are explored in depth in the context of the continental shelf delimitation beyond 200 nm, namely the cut-off effect and disproportionality. In terms of cut-off effect, this chapter articulates its relevance by examining three sub-issues: first, the continuing relevance of cut-off effect in the delimitation between two adjacent States; second, cutting off the access to the continental shelf beyond 200 nm; and third, cutting off the entitlement to the continental shelf beyond 200 nm. As to disproportionality, after clarifying its meanings and functions, this chapter analyzes the prospect of a substantial disproportion in coastal lengths being a relevant circumstance in the continental shelf delimitation beyond 200 nm.