The Iranian-backed Yemeni rebel group Ansar Allah (the Houthis) released a video on 12 October, which included images that confirmed it sank one of the UAE Navy's mine-countermeasures vessels in 2017.
The images - presumably taken by an unmanned aerial vehicle - showed one of the UAE's two Frankenthal-class partially submerged in Al-Mukha (Mocha) harbour on Yemen's southern Red Sea coast.
The video identified the vessel as Al-Qasnah and said it was attacked on 29 July 2017, which corresponds to a claim it made at the time that it had attacked an Emirati warship with a "suitable weapon". The Saudi-coalition reported on the same day that the rebels had targeted Al-Mukha's port with a remotely controlled bomb boat, but only hit the pier, causing no casualties.
Satellite imagery shows the minehunter was floating again in Al-Mukha by 17 August 2017 and was no longer present by 5 September. A floating boom had been deployed across the harbour by that date.
Both the UAE's Frankenthals were visible in satellite imagery taken on 30 August: one in the Eritrean port of Assab, the other 1,750 km away at Abu Dhabi Shipbuilding, where maintenance and repairs of the UAE's naval vessels are carried out.
Want to read more? For analysis on this article and access to all our insight content, please enquire about our subscription options at ihsmarkit.com/janes