The militia group says the attacks are in solidarity with Palestinians living through Israel’s war against Hamas in the Gaza Strip.
Most shipping analysts assume that the Chinese Government has reached an understanding with Iran or the Houthis not to harm car-carrier ships from China.
It seems that “China has found a way to deal with the Iran-backed Houthi rebels, and they have been told that their ships will not be targeted”, said Daniel Nash, associate director of valuation and analytics at Veson Nautical, another maritime data firm.
Travelling through the Red Sea and Suez Canal saves 14 to 18 days on each round trip between Asia and Europe, compared with going around Africa.
This reduces costs for fuel, crews and the ships themselves by a couple of hundred dollars per car.
Going around Africa “adds considerable costs to a shipowner’s fuel bill, increases pollution from the vessel and ultimately adds costs for buyers of new cars”, said Rob Willmington, a senior analyst at Lloyd’s List who led the review of voyages by car-carrier ships.
The savings help Chinese automakers compete in Europe with Japanese, South Korean and European automakers, which rely on European and Japanese shipping lines that are not using Red Sea routes.
Chinese automakers face other costs – thousands of dollars for each car – from tariffs the European Union imposed on electric vehicles from China last year.
BYD and other Chinese automakers have partly bypassed those tariffs by sending hybrid cars that mainly use battery-powered electric motors with small petrol engines as back-ups.
Most other commercial vessels, including big container ships belonging to the state-owned China Ocean Shipping Co, known as Cosco, have been avoiding the Red Sea and Suez Canal since the Houthi militia began sinking or hijacking ships near Yemen in November 2023.
Shipowners in Europe and Asia mostly refuse to allow companies to charter their vessels for such trips.
Commercial insurers in London have become wary of insuring such voyages, charging higher rates when they do.
Chinese automakers, notably BYD and SAIC Motor, have taken delivery in recent months from Chinese shipyards of some of the world’s largest ships designed specially to carry cars.
The automakers are sending these newly built vessels through the Red Sea anyway. Built in shipyards on or near the Yangtze River, these ships have a dozen decks and can carry as many as 5000 cars, worth a total of US$100 million ($168m) or more, on each voyage.
The state-owned SAIC Motor, previously known as the Shanghai Automotive Industry Corp, and BYD did not respond to requests for comment.
In addition to Chinese-owned ships, several car-carrier ships owned by a South Korean company or by a joint venture of businesses in Abu Dhabi, United Arab Emirates, and Turkey also sailed through the Red Sea and Suez Canal in June and July after stopping at car-loading ports in China, Willmington said.
China, Iran, and the Houthis have not announced any deal on car-carrier ships.
China’s Ministry of Foreign Affairs had no immediate response to a request for comment, and the ministry is in its annual August suspension of daily news briefings.
China buys almost all of Iran’s crude oil exports, which represent 6% of Iran’s economy and are equal to half of the Iranian Government’s annual budget.
Chinese officials contend that boycotts of Iran’s oil exports were organised by the West but never approved by the United Nations and so are not binding on Chinese oil companies.
The Houthis announced on July 28 that they would continue their campaign of attacks on ships they believe have any connection to Israel or Israeli ports. The campaign began soon after Hamas militants from Gaza attacked southern Israel on October 7, 2023.
One of the first Houthi targets, and the best-known incident, involved the hijacking in November 2023 of the Galaxy Leader, a car-carrier ship that was travelling back empty from Europe to Asia.
The ship’s 25-member crew was held hostage for 14 months in Yemen and finally released in January, but the Houthis kept the ship at a Yemeni port.
The Israeli Air Force then bombed the vessel a month ago after reports the Houthis were using a sophisticated radar system on the ship to track potential targets in the Red Sea for further attacks.
This article originally appeared in The New York Times.
Written by: Keith Bradsher
Photograph by: Ore Huiying
©2025 THE NEW YORK TIMES