What does transit passage allow for vessels in straits?

Transit passage in straits, as defined by international law, specifically allows for unimpeded navigation for vessels passing through, which includes ensuring that submarines can travel without the obligation to surface. This provision acknowledges the unique nature of submarines which can operate submerged, thus enhancing their operational capabilities and allowing for efficient transit.

This practice supports the principle of freedom of navigation, which is crucial for international shipping and maritime security. By allowing submersibles to remain submerged during transit, it ensures they can navigate through potentially sensitive areas without compromising their operational security or revealing their presence unnecessarily.

In contrast, engaging in military exercises does not fall under transit passage provisions, as military maneuvers typically require advanced notifications and coordination with coastal states. Restrictions on air traffic do not apply in the context of vessels transiting through straits but rather pertain to airspace regulations. Lastly, delayed passage for inspections is not allowed under transit passage rules, as such delays could infringe upon the rights of vessels seeking to navigate freely through straits.