China will impose special port dues on certain U.S.-related vessels meeting specific criteria, with the following provisions:  For vessels engaged in international maritime transport and docking at Chinese ports, the shipowner or their agent must pay the special port dues if any of the following conditions apply:  - The vessel is owned by a U.S. enterprise, organization, or individual;  - The vessel is operated by a U.S. enterprise, organization, or individual;  - The vessel is owned or operated by an enterprise holding 25% or more direct or indirect ownership (including voting rights or board seats) in a U.S. enterprise, organization, or individual;  - The vessel is flagged under the U.S. flag;  - The vessel was built in the U.S.  However, vessels meeting the above criteria but built in China are exempt from this fee. Vessels that only enter Chinese shipyards for repairs while empty, as well as other exempted cases, are also exempt.  The fee is calculated based on the net tonnage of the vessel (less than 1 net ton is counted as 1 net ton):  - From October 14, 2025, 400 RMB per net ton;  - From April 17, 2026, 640 RMB per net ton;  - From April 17, 2027, 880 RMB per net ton;  - From April 17, 2028, 1,120 RMB per net ton.  The same vessel will be charged a maximum of 5 voyages per year. April 17 of each year marks the start of a new billing cycle.  The maritime administration authority in the Chinese port where the vessel first docks is responsible for collecting and managing the fees. If a vessel docks at multiple Chinese ports during a single voyage, payment is only required at the first port of entry. For vessels docking more than 5 times within a year, fees apply to the first 5 dockings, and subsequent dockings are exempt if payment records are provided.  The shipowner or their agent must truthfully declare the vessel's country of construction, flag, owner, operator, leasing status, and planned port of call to the maritime department of the destination port 7 days before the vessel's expected arrival (or at the time of departure from the previous port if the voyage lasts less than 7 days) and complete the payment.  The maritime department will verify all relevant information of arriving vessels. Any concealment or omission will require supplementary declarations.  Maritime authorities will not process entry or exit procedures for vessels with unpaid fees. For vessels that have departed but owe fees, the outstanding amount must be paid before their next visit to China.  The scope, standards, and implementation timeline of this fee will be dynamically adjusted based on actual circumstances. These provisions take effect from the date of issuance, and the Ministry of Transport retains the authority to interpret them.