On 17 April 2025, the Office of the United States Trade
Representative (USTR) announced the Section 301
action targeting China's maritime, logistics and shipbuilding
sectors to address China's dominant market position in these
sectors by levying significant additional port charges for vessels
with a Chinese nexus from 14 October 2025, and on 10 October 2025
further announced modifications to the Section 301 action including
a partial easing of the restrictions specifically related to the
liquefied natural gas (LNG) sector (collectively, the USTR
Measures)1.
In response to the USTR Measures, China's Ministry of
Transport (CMOT) announced on 10 October 2025 that
effective from 14 October 2025, similar additional port charges
will be imposed against vessels with a US nexus, and on 14 October
2025 CMOT further promulgated implementation measures
(collectively, the CMOT Countermeasures)2.