Asia Maritime Transparency Initiative

Asia Maritime Transparency Initiative Promoting openness and exchange in maritime Asia. Follow us on Twitter The maritime environment in East Asia contains both promise and peril.

The Indo-Pacific region is host to some of the world’s most important shipping lanes, facilitates huge volumes of regional trade, and boasts abundant natural resources. Competing territorial claims, incidents between neighboring countries, and increasing militarization, however, raise the possibility that an isolated event at sea could become a geopolitical catastrophe. This is all occurring again

st a backdrop of relative opaqueness. Geography makes it difficult to monitor events as they occur, and there is no public, reliable authority for information on maritime developments. The Asia Maritime Transparency Initiative seeks to change this. AMTI was conceived of and designed by CSIS. It is an interactive, regularly-updated source for information, analysis, and policy exchange on maritime security issues in Asia. AMTI aims to promote transparency in the Indo-Pacific to dissuade assertive behavior and conflict and generate opportunities for cooperation and confidence building. Because AMTI aims to provide an objective platform for exchange, AMTI and CSIS take no position on territorial or maritime claims. For consistency, all geographic locations are identified using the naming conventions of the United States Government as determined by the U.S. Board on Geographic Names. The foundation of AMTI is the integrity of the information we present. AMTI aggregates information from news sources, as well as specially designated research and nonprofit organizations, public sector institutions in Asia, and individuals. There may be rare instances where AMTI will be asked to keep the source of a particular piece of information confidential. We will do so in select cases provided the information passes our rigorous vetting process and serves the interests of the project.

As China jumps back into island building, Vietnam has continued to expand its own outposts in the South China Sea. New i...
05/08/2026

As China jumps back into island building, Vietnam has continued to expand its own outposts in the South China Sea. New imagery shows Hanoi is up to 2,771 acres of artificial land and is beginning to construct specialized infrastructure: https://cs.is/49hWc6I

The center of gravity in world affairs has shifted to Asia. No other region will do more to determine whether the 21st century will be a peaceful one.

Ship tracking data shows that Beijing now maintains a regular coastguard presence around Taiwan-administered Pratas Isla...
03/30/2026

Ship tracking data shows that Beijing now maintains a regular coastguard presence around Taiwan-administered Pratas Island in the South China Sea. https://cs.is/3POSIld

The center of gravity in world affairs has shifted to Asia. No other region will do more to determine whether the 21st century will be a peaceful one.

Antelope Reef may become China’s largest island in the South China Sea, reaching a record-breaking 1,450 acres of land r...
03/19/2026

Antelope Reef may become China’s largest island in the South China Sea, reaching a record-breaking 1,450 acres of land reclamation. https://cs.is/4bmyRlO

The center of gravity in world affairs has shifted to Asia. No other region will do more to determine whether the 21st century will be a peaceful one.

China’s maritime militia presence in the South China Sea reaches a record high in 2025, with deployments increasingly co...
02/23/2026

China’s maritime militia presence in the South China Sea reaches a record high in 2025, with deployments increasingly concentrated at Mischief and Whitsun reefs. See AMTI’s latest data: https://cs.is/4s4SCUv

The center of gravity in world affairs has shifted to Asia. No other region will do more to determine whether the 21st century will be a peaceful one.

AIS data shows Beijing’s “central management platform” has relocated from the China-South Korea PMZ to Weihai shipyard, ...
02/03/2026

AIS data shows Beijing’s “central management platform” has relocated from the China-South Korea PMZ to Weihai shipyard, though two of its aquaculture cages remain. Get the latest updates from AMTI and Beyond Parallel: https://cs.is/4qVZ6Vq

AIS data shows that the nature of CCG patrols in the South China Sea has drastically changed in 2025: https://cs.is/3Ocy...
01/29/2026

AIS data shows that the nature of CCG patrols in the South China Sea has drastically changed in 2025: https://cs.is/3OcySPZ

AIS data shows Beijing’s “central management platform” leaving the China-Korea Yellow Sea PMZ—while two aquaculture cage...
01/28/2026

AIS data shows Beijing’s “central management platform” leaving the China-Korea Yellow Sea PMZ—while two aquaculture cages remain. The latest data from AMTI and Beyond Parallel: https://cs.is/45WjZHV

China’s incremental deployment of marine observation buoys in and around the South Korea–China Provisional Measures Zone...
01/05/2026

China’s incremental deployment of marine observation buoys in and around the South Korea–China Provisional Measures Zone reflects its expanding maritime footprint in the Yellow Sea: https://cs.is/4qeHjby

The center of gravity in world affairs has shifted to Asia. No other region will do more to determine whether the 21st century will be a peaceful one.

China quietly upgrades its Spratly outposts with new antenna arrays, ISR radomes, and mobile EW systems—expanding its ab...
12/02/2025

China quietly upgrades its Spratly outposts with new antenna arrays, ISR radomes, and mobile EW systems—expanding its ability to monitor and control the South China Sea. https://cs.is/4rDrRr0

China’s deployment of buoys to Scarborough Shoal may be less about collecting oceanographic data and more about sending ...
11/05/2025

China’s deployment of buoys to Scarborough Shoal may be less about collecting oceanographic data and more about sending a message: https://cs.is/4qKeZyw

The center of gravity in world affairs has shifted to Asia. No other region will do more to determine whether the 21st century will be a peaceful one.

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