Louise-Marie (F931) is a Karel Doorman-class frigate of the Marine Component of the Belgian Armed Forces that was commissioned in 2008.

HNLMS Willem van der Zaan was rechristened Louise-Marie (F931) on 8 April 2008 in Antwerp by Queen Paola of Belgium.

[2] On 29 November 2013, the ship arrived in London, UK as part of the preparations for the centenary of the start of World War I delivering soil from 70 World War I battlefields collected by British and Belgian schoolchildren for the Flanders Fields Memorial Garden in London's Wellington Barracks.

[3] On January 19, 2024, it was announced the Louise-Marie was being sent to the Red Sea to aid in the EU-led Operation Aspides to protect naval shipping in response to a rise in Houthi attacks on commercial vessels near the coast of Yemen.

[4] Scheduled to transit the Suez Canal on April 12, deployment indefinitely postponed due to failed operational and technical tests while transiting the Mediterranean Sea, including an incident where a RIM-7 Sea Sparrow missile was reportedly "stuck" in its launch tube.