Territorial Waters and Baselines

Sovereignty at Sea

A state's territorial sea extends up to 12 nautical miles from its baseline. Within this zone, the coastal state exercises full sovereignty — the same as over its land territory — including over the airspace above and the seabed below. This includes the right to regulate fishing, resource extraction, and all activities.

The critical exception is the right of innocent passage: foreign ships may transit the territorial sea without prior authorization, provided they pass 'continuously and expeditiously' and do not engage in threatening activities. Submarines must surface and show their flag. Warships also enjoy innocent passage, though some states (including China) claim the right to require prior notification or authorization — a position rejected by Western naval powers.

The Baseline Controversy

All maritime zones are measured from baselines, making their location enormously consequential. Normal baselines follow the low-water line. But states can draw straight baselines across deeply indented coastlines or fringing islands, potentially enclosing large areas of sea as internal waters.

This is heavily abused. China's straight baselines around the Paracel Islands enclose vast ocean areas. Several states have drawn baselines far exceeding what UNCLOS permits. Since baselines determine where every other zone begins, manipulating them is one of the most effective ways to expand maritime claims — and one of the hardest to challenge without going to court.

Further Reading and Application

Deepening your understanding of this topic involves connecting it to broader patterns in political science, international relations, history, and applied research. The most effective students don't treat lessons as standalone units — they actively look for connections to other topics they've studied and to current events they're following.

Active Learning Strategies

For any concept you encounter:

• Restate it in your own words: if you can't explain a concept simply to someone who has never encountered it, you don't yet understand it well enough.
• Find real-world examples: ground every abstract concept in at least two specific historical or contemporary cases.
• Identify the strongest counter-arguments: what would a careful critic say against this concept's usefulness or accuracy?
• Connect to other concepts: how does this concept relate to others you've encountered?
• Apply it to a new situation: take a current event you're following and analyze it through the lens of this concept.

Active engagement of this kind builds the analytical depth that competitive activities (MUN, debate, mock trial) and academic work (IB, AP, university-level analysis) require.

Common Pitfalls

Students often make several recurring mistakes when first engaging with new political and analytical concepts:

• Treating concepts as definitions to memorize rather than analytical tools to apply.
• Applying concepts mechanically without considering whether they actually fit the case.
• Failing to distinguish concepts that seem similar on the surface but operate differently in detail.
• Ignoring scholarly disagreement about how concepts should be understood and applied.
• Privileging recent sources over foundational ones that established the analytical framework.

Avoiding these pitfalls is part of developing the disciplined analytical thinking that political and diplomatic research rewards.

Continuing Your Study

Model Diplomat's broader curriculum connects this topic to related lessons in MUN preparation, debate skills, international relations theory, and historical research. Working through the related lessons builds the integrated understanding that single-topic study cannot produce alone. Your engagement with this material is one investment in the deeper analytical capacity that distinguishes effective practitioners from those who can only repeat what they've been told.