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Innocent passage

Innocent passage is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Innocent passage rather than just read about it. In short: Innocent passage is a concept in the law of the sea that allows for a vessel to pass through the territorial sea (and certain grandfathered internal waters) of another state, subject to certain restrictions. Innocent passage applies to the entire territorial sea, up to at most 12 nautical miles (22 km; 14 mi) from coastal baseline.

Key takeaways

  • Innocent passage belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Innocent passage to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Innocent passage from memory before moving on to harder problems.

Reference excerpt

Innocent passage is a concept in the law of the sea that allows for a vessel to pass through the territorial sea (and certain grandfathered internal waters) of another state, subject to certain restrictions. Innocent passage applies to the entire territorial sea, up to at most 12 nautical miles (22 km; 14 mi) from coastal baseline. Transit passage is a similar right that applies only to straits that divide two areas of international waters; it has different requirements for transiting vessels. Freedom of navigation is a general right enjoyed in international waters; "freedom of navigation operations" enforces this right, in some cases to counter a claim by a sovereign state that certain waters are territorial.

Definition The United Nations Convention on the Law of the Sea Article 19 defines innocent passage as:

Passage is innocent so long as it is not prejudicial to the peace, good order or security of the coastal State. Such passage shall take place in conformity with this Convention and with other rules of international law. Passage of a foreign ship shall be considered to be prejudicial to the peace, good order or security of the coastal State if in the territorial sea it engages in any of the following activities: (a) any threat or use of force against the sovereignty, territorial integrity or political independence of the coastal State, or in any other manner in violation of the principles of international law embodied in the Charter of the United Nations; (b) any exercise or practice with weapons of any kind; (c) any act aimed at collecting information to the prejudice of the defence or security of the coastal State; (d) any act of propaganda aimed at affecting the defence or security of the coastal State; (e) the launching, landing or taking on board of any aircraft; (f) the launching, landing or taking on board of any military device; (g) the loading or unloading of any commodity, currency or person contrary to the customs, fiscal, immigration or sanitary laws and regulations of the coastal State; (h) any act of wilful and serious pollution contrary to this Convention; (I) any fishing activities; (j) the carrying out of research or survey activities; (k) any act aimed at interfering with any systems of communication or any other facilities or installations of the coastal State; (l) any other activity not having a direct bearing on passage.

Underwater vehicles like submarines are required by the treaty to surface and show their flags during innocent passage.

History Initially, the right of innocent passage in the current sense began to take shape in the 1840s (as a customary rule) with the development of world trade and the emergence of steamship navigation, for which it was economically significant to use the shortest possible route often through the coastal waters of a foreign state. The law was codified in the 1958 Convention on the Territorial Sea and the Contiguous Zone and affirmed in the 1982 UNCLOS.

Suspension The coastal state may temporarily suspend the innocent passage of foreign ships if "such suspension is essential for the protection of its security". The suspension must be applied without discrimination between foreign ships. Suspension is however not permitted in international straits.

See also 1986 Black Sea incident 1988 Black Sea bumping incident 1994 Yellow Sea incident Corfu Channel incident Gulf of Tonkin incident

References

Sources Oral, Nilufer (2019). "Navigating the Oceans: Old and New Challenges for the Law of the Sea for Straits Used for International Navigation". Ecology Law Quarterly. 46 (1). [University of California, Berkeley, University of California, Berkeley, School of Law]: 163–190. ISSN 0046-1121. JSTOR 26853549. Retrieved 31 August 2024.

External links UN Convention on the Law of the Sea, Part II: Section 3 defines "innocent passage" Spadi, F. (2001), "The Bridge on the Strait of Messina: 'Lowering' the Right of Innocent Passage?", International and Comparative Law Quarterly, 50: 411–419.

Worked examples

Example 1 — a first encounter with Innocent passage

Start with the simplest possible case. Write down what Innocent passage claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Innocent passage before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Innocent passage ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Innocent passage

In research
Innocent passage appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Innocent passage in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Innocent passage is common in secondary-school and first-year university syllabi. It links to neighbouring topics Law of the sea, so understanding it makes those chapters shorter.
In everyday life
Look for Innocent passage outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Innocent passage in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Innocent passage means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Innocent passage out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Innocent passage in simple terms?

Innocent passage is a concept in the law of the sea that allows for a vessel to pass through the territorial sea (and certain grandfathered internal waters) of another state, subject to certain restrictions. Innocent passage applies to the entire territorial sea, up to at most 12 nautical miles (22…

Why does Innocent passage matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Innocent passage?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Innocent passage.

Tags

  • Law of the sea

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