Belgian Minehunter Departs for Strait of Hormuz Mission

The Belgian minehunter BNS Primula departed from Zeebrugge on May 28, 2026, with 45 crew members aboard, bound for the Mediterranean Sea as part of a strategic repositioning that could see the aging vessel deployed to the Strait of Hormuz. The departure, conducted jointly with the Dutch minehunter Zr. Ms. Willemstad, marks a significant step in Belgium’s commitment to international maritime security in one of the world’s most critical waterways.

Strategic Repositioning

The Primula, a Flower-class minehunter commissioned in 1990, was pulled from NATO’s Standing NATO Mine Countermeasures Group 1 (SNMCMG1) in the Baltic Sea and ordered to the Mediterranean following an April 2026 decision by the Belgian federal government. According to the Belgian Ministry of Defense, the vessel will join SNMCMG2, NATO’s second standing mine countermeasures group, placing it closer to the Strait of Hormuz for potential operations.

Defense Minister Theo Francken announced the prepositioning decision in April via social media, stating: “I ordered our minehunter Primula to sail from the Baltic Sea to the Mediterranean Sea. We are ready to take our responsibility in the Strait of Hormuz if necessary.”

Rapid Upgrades and Crew Readiness

Before departure, the Primula underwent a rapid upgrade at its home port, receiving new antennas capable of detecting and intercepting drones, as well as additional heavy machine guns for defense against hostile aircraft. Despite these enhancements, the vessel remains lightly armed with only three .50-caliber machine guns and would require protection from larger coalition warships in any high-risk environment.

Crew members interviewed by Het Laatste Nieuws expressed readiness for the mission ahead. “If it comes to that, we’re ready for it,” said crew member Levy, whose family gathered at the Zeebrugge docks for an emotional farewell. Diver-mine hunter Franky, with 20 years of experience, added: “When it storms, at least you’re firmly wedged in your bunk. If we have to, we’ll do it.”

Geopolitical Context

The deployment unfolds against a complex backdrop. A ceasefire between the United States and Iran was signed on April 8, 2026, but a permanent peace agreement remains elusive. Both sides maintain blockades in the Strait, and Iran has reportedly laid naval mines across a danger zone of 1,400 square kilometers — an area comparable to 1.5 times the size of Walloon Brabant. According to Marineschepen.nl, experts estimate it would take six months to clear the waterway of mines.

The Strait of Hormuz is one of the world’s most vital maritime chokepoints, through which approximately 20-30% of global oil passes daily. Any disruption to shipping through this narrow waterway has immediate consequences for energy prices and supply chains worldwide.

Naval Capabilities in Transition

The Primula’s deployment highlights Belgium’s naval transition period. The Belgian fleet currently operates only two aging minehunters — the Primula and its sister ship Lobelia (1988) — down from the original ten Flower-class vessels purchased. Naval Commander Tanguy Botman noted that the ship’s maximum speed has been halved from 15 to 8-9 knots due to age, and climate adaptations mean the vessel will only be fully deployable from early June.

Belgium currently has no operational frigate: the Louise-Marie is in major maintenance, and the Leopold I is being worked up but will not be ready for at least a month. This leaves the minehunter dependent on coalition protection.

Belgium and the Netherlands are jointly investing in 12 new City-class mine countermeasure vessels, six per country. The first Belgian ship, M940 Oostende, was delivered in November 2025 but is not expected to become operational until late 2026 or early 2027. The new vessels will use drone-based “toolbox” technology for mine detection and neutralization.

Belgian Minehunting Expertise

Despite its aging fleet, Belgium is internationally recognized as a center of excellence in naval mine warfare. The NATO Naval Mine Warfare Centre of Excellence is located in Oostende, co-located with the Navy Academy where mine warfare specialists are trained. This expertise, built over decades of cooperation with the Netherlands, positions Belgium as a valuable contributor to any mine clearance operation in the region.

As noted by Seatalk.be, the Primula’s deployment is being adjusted within NATO structures “in light of the evolving security situation in and around the Strait of Hormuz, as well as broader tensions at sea.”

Parliamentary Oversight and Conditions

Any actual deployment of the Primula into the Strait of Hormuz requires approval from the Belgian federal parliament. Defense Minister Francken has stated that a joint debate between the Defense and Foreign Affairs committees will be held, likely based on a resolution. Conditions for deployment include a sustainable, verifiable ceasefire and a controlled security context.

NATO Secretary-General Mark Rutte has urged European allies to contribute to the “Hormuz coalition,” and Belgium has consulted with the United Kingdom, France, and other partner nations regarding potential contributions.

What’s Next

The Primula is expected to join SNMCMG2 in the Mediterranean within approximately two weeks, where it will await a political decision on whether to proceed to the Strait of Hormuz. The broader geopolitical situation — including US-Iran negotiations, the stability of the ceasefire, and the formation of the international coalition — will ultimately determine whether Belgium’s minehunter moves from prepositioning to active deployment in one of the world’s most strategically sensitive waterways.