Very good overview of the various Naval incidents for Iran in the past several years, including this one for the Kharg, a supply/refueling ship, which burned and sank June 1. “Iran’s largest warship catches fire, sinks in Gulf of Oman,” Amir Vahdat and Jon Gambrell, AP, June 1, 2021.

“UPDATED: Iranian Warship Thought to be Headed to Venezuela Left Port with 7 High-Speed Missile Boats Aboard,” H.I. Sutton and Sam LaGrone, USNI News, June 1, 2021.

“Iran’s biggest cement production line inaugurated,” Tehran Times, June 1, 2021.

It is my understanding the pilots were inside a hanger when their ejection seat discharged.  Certainly a tragic scene.  “Iran TV: ‘Technical problem’ on fighter jet kills 2 pilots,” AP, June 1, 2021.

“Iran navy training ship on fire at mouth of Gulf, crew evacuated –report,” Reuters, June 1, 2021.