This document summarizes key parts of the United Nations Convention on the Law of the Sea (UNCLOS) 1982. It discusses the territorial sea and contiguous zone, including the sovereignty of coastal states over their territorial sea and airspace above it. It establishes the breadth of the territorial sea at 12 nautical miles and outlines rules for determining baselines and outer limits. It also covers innocent passage of ships through territorial seas, jurisdiction of coastal states, and exclusive economic zones.