Context

• The Strait of Hormuz and the Straits of Malacca and Singapore demonstrate how narrow maritime corridors can acquire enormous strategic importance.
• Both connect major waterways and involve overlapping questions of territorial sovereignty and international navigation.
• The Malacca-Singapore experience shows that sovereignty, freedom of navigation, environmental protection and international cooperation can coexist through negotiated rules.
• Hormuz, however, remains more difficult because its central dispute involves national security, military presence and geopolitical rivalry.

The Strategic Importance of Maritime Chokepoints

• The Malacca Strait extends roughly 800 km between the Malay Peninsula and Sumatra, while the approximately 105-km Strait of Singapore connects it to the South China Sea. Together, they form a vital global shipping route.
• The Strait of Hormuz similarly connects the Persian Gulf with the Gulf of Oman and the wider Indian Ocean.
• Disruption in either corridor can affect energy supplies, shipping costs, insurance and global markets.
• Thus, geography gives narrow waterways disproportionate geopolitical significance. Their security becomes an international concern even when they fall within national territorial waters.

From International Waters to Territorial Sovereignty

• The Malacca experience reflects the transition from unrestricted international navigation towards stronger coastal-state sovereignty.
• Indonesia's 1957 archipelagic principle declared waters surrounding and connecting its islands to be Indonesian waters, partly to protect territorial integrity and limit external interference.
• Malaysia later adopted a 12-nautical-mile territorial sea, while Singapore supported arrangements safeguarding navigation.
• Because parts of the Straits are less than 24 nautical miles wide, the territorial seas of the littoral states meet, leaving no intervening high seas.
• The challenge became balancing national sovereignty with uninterrupted international navigation.

UNCLOS and the Compromise of Transit Passage

• The United Nations Convention on the Law of the Sea (UNCLOS) provided an important compromise through the concept of transit passage.
• Unlike innocent passage, transit passage permits vessels, including warships, to navigate international straits continuously and expeditiously.
• This arrangement allowed coastal states to retain sovereignty while preserving predictable international access.
• Indonesia accepted the principle with reservations, while Malaysia emphasised environmental protection, insurance and vessel-safety concerns.
• The experience demonstrates that legal compromise and reciprocal concessions can reconcile competing maritime interests.

Cooperation among Littoral States and Major Powers

• Indonesia, Malaysia and Singapore developed mechanisms for navigation safety and maritime security.
• Japan supported cooperation through the Malacca Strait Council, while even the United States and Soviet Union shared an interest in maintaining reliable maritime transit.
• The 2007 Cooperative Mechanism expanded this approach by enabling user states, industries and other stakeholders to contribute voluntarily to navigation aids, hydrographic surveys and safety projects.
• The arrangement illustrates how shared practical interests can promote cooperation despite political differences.
• Importantly, the littoral states did not impose tolls on vessels exercising transit-passage rights.

Why Hormuz Is Different?

• Hormuz presents a comparable territorial situation because Iranian and Omani territorial waters intersect in parts of the Strait.
• However, its political and legal circumstances differ considerably.
• Iran has not ratified UNCLOS and enacted a 1993 requirement for foreign warships to obtain authorisation for passage.
• More significantly, Hormuz is closely connected with Iran's security concerns and its confrontation with external military powers, particularly the United States.
• Consequently, navigation arrangements alone cannot resolve disputes rooted in sovereignty, military presence and strategic insecurity.

The Role of Great Powers

• The Malacca experience benefited from a broader international maritime-law process in which major powers were willing to accept compromises within UNCLOS.
• This created relatively predictable rules governing navigation.
• Hormuz operates within a more polarised geopolitical environment.
• Even if Iran and Oman establish an arrangement for reopening the Strait, its effectiveness may depend on whether major external powers recognise and accept it.
• Therefore, regional agreements may remain fragile without wider international acceptance.

Lessons for Hormuz

• The Malacca-Singapore experience offers several lessons for Hormuz. First, littoral states should remain central to maritime governance.
• Second, sovereignty need not imply unrestricted control over international navigation.
• Third, clear legal rules can reduce uncertainty for commercial and military vessels.
• Fourth, navigation safety, environmental protection and hydrographic cooperation can create common interests even amid political disagreements.
• Finally, durable arrangements require confidence-building and participation by major user states.
• However, Malacca cannot simply be transplanted to Hormuz.
• The former evolved through prolonged legal negotiation and cooperation, whereas the latter is deeply embedded in regional and global security competition.

Conclusion

• The comparison demonstrates that maritime chokepoints are governed by geography, international law and geopolitics simultaneously.
• Malacca succeeded through negotiation, legal compromise, regional cooperation and stakeholder participation.
• Hormuz presents a more difficult challenge because its governance is inseparable from Iran's security concerns and tensions with the United States.
• The Malacca-Singapore experience therefore offers a framework rather than a ready-made solution.