Four tankers changed course in the Red Sea on Wednesday, with two signalling the Suez Canal as their new destination after Yemen's Houthi militia warned ships to avoid sailing to Saudi Arabian ports, ship-tracking data showed.
The Iran-aligned Houthis on Monday declared a naval blockade against Saudi Arabia, opening a potential new front against the United States in its war with Iran and raising the threat to global energy supplies and trade beyond the Gulf.
"The threat of Houthi hostile actions against Saudi Arabia ... has begun to have an overall effect on tanker activity," ship broker Clarksons said in a note.
"There are reports of several tankers, having loaded in Saudi Arabia’s Yanbu port in the Red Sea, that have shifted course towards the Suez Canal rather than sail south towards the Bab el-Mandeb strait, while others are holding their positions waiting for further instruction."
HIGHER RISK OF ATTACKS
Ships with links to Israel, the United States or Saudi Arabia are at a higher risk of being attacked by the Houthis and are advised to avoid voyages through the Red Sea and Gulf of Aden until the threat level decreases, the European Union's Aspides naval force said on Wednesday in an advisory seen by Reuters.
Any vessel that recently called at, loaded cargo or discharged cargo at Saudi ports should "reduce its electronic footprint by minimising AIS (ship-tracking) transmissions and limiting any publicly accessible digital information that could facilitate targeting", the advisory said.
The four tankers all changed direction, two of which signalled their destination as open waters in the Red Sea, according to LSEG and MarineTraffic ship-tracking data and analysis from British maritime risk-management group Vanguard.
A fifth ship — a vehicle carrier called Liu Jiang Kou — appeared to have turned away in the Gulf of Aden on Wednesday after signalling the Saudi Red Sea port of Jeddah as its next destination, shipping data showed. The vessel's manager, China's COSCO Shipping group, did not respond immediately to a request for comment.
Three oil tankers loaded with Saudi crude for China and India made U-turns in the Red Sea on Tuesday, heading towards the Suez Canal rather than braving the Yemeni coast. One of these tankers included the Xin Long Yang, managed by COSCO.
CRITICAL ALTERNATIVE TO STRAIT OF HORMUZ
A closure of the Red Sea's southern gateway would remove a critical alternative to the Strait of Hormuz for Saudi Arabia and heighten fears of shortages.
"This (Houthi) embargo raises serious questions about the viability of eastbound routes from Saudi Arabia’s Yanbu port – the outlet for its east-west pipeline," ship broker Braemar said in a separate note.
A number of tankers were still visible close to Yanbu's anchorage on Wednesday, ship-tracking data showed.
Red Sea traffic has not fully recovered since Houthi attacks off Yemen’s coast began in November 2023 in what the group said was solidarity with Palestinians in the Gaza war.
The group's attacks on merchant ships only ended with the Gaza ceasefire last October.
The Houthis told shipping companies not to load or discharge cargo at Saudi Arabian ports or they may be targeted. Maritime security sources, meanwhile, said they had received recordings of separate Houthi warnings to ships in the Red Sea since Monday.
"They warn all vessels intending to proceed to Saudi ports that they will be open targets," said one shipping source who receives updates from a ship in the Red Sea.
(Reuters)
Facts Only
* Four tankers changed course in the Red Sea on Wednesday.
* Two tankers signaled the Suez Canal as their new destination after Houthi warnings regarding sailing to Saudi Arabian ports.
* The Houthis declared a naval blockade against Saudi Arabia on Monday.
* Ship broker Clarksons reported that Houthi threats have affected tanker activity.
* Some tankers loaded in Yanbu port shifted course toward the Suez Canal instead of the Bab el-Mandeb strait.
* Ships linked to Israel, the United States, or Saudi Arabia are at higher risk of attack by the Houthis.
* The European Union's Aspides naval force advised vessels to avoid voyages through the Red Sea and Gulf of Aden.
* Vessels that recently called at Saudi ports were advised to reduce AIS transmissions.
* Four tankers changed direction, two signaling open waters in the Red Sea.
* A vehicle carrier named Liu Jiang Kou turned away in the Gulf of Aden after signaling Jeddah as its next destination.
* Three oil tankers loaded with Saudi crude for China and India made U-turns toward the Suez Canal on Tuesday.
Executive Summary
Houthi threats prompted four oil tankers to change course in the Red Sea, with two redirecting toward the Suez Canal following warnings from Yemen's militia targeting Saudi Arabian ports. The Houthis declared a naval blockade against Saudi Arabia on Monday, escalating tensions related to the conflict with Iran and affecting global energy supplies. Ship brokers noted that the threat has begun to influence tanker activity, with some vessels shifting routes away from the Bab el-Mandeb strait towards the Suez Canal or holding position pending further instructions.
A risk advisory was issued by the European Union's Aspides naval force, warning ships linked to Israel, the United States, or Saudi Arabia to avoid voyages through the Red Sea and Gulf of Aden. Vessels that recently transacted in Saudi ports were advised to minimize electronic transmissions to reduce potential targeting risks. Furthermore, a vehicle carrier named Liu Jiang Kou turned away from the Gulf of Aden after signaling Jeddah as its destination. Three tankers loaded with Saudi crude for China and India also changed course towards the Suez Canal rather than proceeding south toward the Yemeni coast.
Full Take
The narrative illustrates how non-state actors can leverage maritime choke points to exert geopolitical pressure, directly translating regional conflict into tangible commercial disruption. The movement of tankers from the Bab el-Mandeb route to the Suez Canal demonstrates a direct response to perceived risk associated with specific geographical areas controlled by external powers. This action shifts the vulnerability away from the immediate threat zone and toward established, albeit potentially more congested, maritime arteries like the Suez Canal.
The underlying pattern reveals a dynamic where security concerns—framed as an act of war or blockade—are immediately operationalized into commercial behavior. The advice issued by naval forces regarding electronic footprints highlights the tension between securing physical routes and managing the informational space surrounding maritime trade. This suggests a systemic challenge: how can international shipping navigate environments where kinetic threats are abstractly communicated, forcing commercial entities to make real-time risk calculations that affect global logistics flows?
The existence of alternative routes, such as the Strait of Hormuz, versus alternatives like the Suez Canal, forces an examination of which transit corridors hold greater strategic weight under duress. When a critical southern gateway is jeopardized, the pursuit of commercially viable pathways becomes intrinsically linked to geopolitical positioning, revealing that economic viability is not purely a function of geography but is highly dependent on perceived security guarantees and the stability of international actors.
Bridge Questions: If maritime insurance mechanisms fail to accurately price these escalating, location-specific risks, what structural changes are necessary for maritime security protocols to decouple transit from immediate political confrontation? How do nations balance the imperative of free navigation against the necessity of enforcing security zones when those zones are defined by contested external narratives? What alternative economic incentives could stabilize vital east-west trade routes independent of current geopolitical friction points?
Sentinel — Human
The text functions as a synthesis of maritime tracking data, official advisories, and expert commentary regarding the impact of Houthi threats on Red Sea shipping routes.