Ocean Space Has Strategic Value Because Movement and Resources Converge
Sea lanes connect producers, markets and military forces across long distances.
Chokepoints are narrow routes where disruption can delay shipping and raise transport or energy costs far beyond the surrounding coast.
Canals such as Suez and Panama shorten routes but concentrate dependence on one managed passage.
Contested islands can affect maritime claims, military reach and access to fisheries or seabed resources.
Submarine cables carry international data and make the seabed part of economic and national security.
Note
Strategic value comes from location and connectivity as well as from the resources beneath the water.
A small strait can therefore matter more to global trade than a much larger open-ocean area.
Submarine Cables Add a Digital Layer to Ocean Security
Cable routes link coastal landing stations and carry most intercontinental digital traffic.
Physical concentration creates vulnerability where several cables meet near a landing point or narrow sea.
Fishing gear and anchors cause accidental breaks, while deliberate damage is difficult to attribute in deep water.
Redundant routes and repair ships reduce disruption but cannot remove geopolitical risk.
Common Mistake
The high seas are not lawless, because UNCLOS and other agreements regulate navigation, resources, pollution and dispute settlement.
Different maritime zones give states different rights rather than identical sovereignty everywhere.
Maritime Zones Divide Rights Without Ending Overlap
Definition
Exclusive Economic Zone (EEZ)
An oceanic area extending 200 nautical miles from a country’s coastline where that nation has exclusive rights over marine resource use.
Territorial Sea and Exclusive Economic Zone
A territorial sea may extend up to 12 nautical miles from the baseline, where the coastal state has sovereignty subject to navigation rights such as innocent passage.
An exclusive economic zone may extend up to 200 nautical miles, where the coastal state has sovereign rights over resources but other states retain navigation, overflight and cable-laying freedoms.
Overlapping claims arise where coasts are close together or where states disagree about whether a feature can generate maritime zones.
UNCLOS provides rules and dispute procedures, but compliance still depends on state choices and power relations.
Exam technique
Do not write that an EEZ is sovereign national territory.
State the specific resource rights of the coastal state and the navigation rights retained by other states.
South China Sea: Law, Resources and Power Overlap
The contested area includes the Spratly and Paracel island groups and waters claimed in different ways by China, the Philippines, Viet Nam, Malaysia, Brunei and Taiwan.
Resource interests include fisheries, possible oil and gas deposits and access for coastal communities and commercial fleets.
Route value comes from the sea’s position between East Asian production centres and the Indian and Pacific oceans.
China’s nine-dash line overlaps with maritime zones claimed from the coasts of neighbouring states.
Artificial-island construction has added runways, ports and military facilities, increasing surveillance and force-projection capacity.
Coastguard encounters and fishing disputes create repeated risks of collision, coercion and escalation below the level of declared war.
The 2016 Arbitration Clarified the Law but Not Enforcement
The Philippines began arbitration under UNCLOS against China in 2013.
The tribunal’s 2016 award found no legal basis for Chinese historic-rights claims beyond the rights allowed by UNCLOS within the nine-dash line.
The tribunal also found that none of the Spratly features could generate an exclusive economic zone of its own.
China rejected the award and did not accept its conclusions, showing that a binding legal decision has limited effect without compliance.
Management Mixes Law, Diplomacy and Deterrence
UNCLOS and arbitration clarify legal claims and give smaller states a rules-based forum.
ASEAN negotiations aim to reduce incidents through regional dialogue and a code of conduct.
Bilateral talks can address fishing access or crisis communication but may reflect unequal bargaining power.
Military patrols and alliances can deter coercion but also increase the number of armed encounters.
Joint development could postpone sovereignty disputes while sharing resources, although mistrust makes agreements difficult.
Case study
Essay use
Use the South China Sea to show that international law can clarify maritime rights without resolving conflict when enforcement capacity and geopolitical power remain unequal.
Evidence
China, the Philippines, Viet Nam, Malaysia, Brunei and Taiwan make overlapping claims involving fisheries, possible hydrocarbons and a major shipping route.
Analysis
China’s nine-dash line and artificial-island facilities overlap with neighbouring maritime claims, creating repeated coastguard and fishing encounters below the threshold of declared war.
Evaluation
The 2016 tribunal found no legal basis for historic-rights claims beyond UNCLOS and no Spratly feature capable of generating its own EEZ, but China rejected the award, exposing the gap between legal authority and practical control.
Conflict Risk Rises When Several Values Occupy the Same Space
The South China Sea is contested because trade routes, food resources, hydrocarbons, national identity and military strategy overlap.
International law narrows the range of defensible claims but does not remove differences in power or enforcement.
Durable management requires rules for navigation, fishing, resource development, environmental protection and crisis communication at the same time.
Active recall
Why does a chokepoint have strategic value?
Which rights does a coastal state hold in an EEZ?
What did the 2016 South China Sea arbitration decide about the nine-dash line?
Why can legal clarification fail to resolve a geopolitical dispute?
