PROGRESS IV Sinks in Black Sea After Fire Off Romania — 12 Crew Rescued as Cause of Incident Remains Under Investigation

Another serious incident has put commercial shipping in the Black Sea under the spotlight.

The general cargo vessel PROGRESS IV caught fire and later sank on 27 August 2026 while sailing inside Romania’s Exclusive Economic Zone (EEZ), around 15–20 nautical miles southeast of Sfântu Gheorghe. The incident occurred outside Romania’s territorial waters, but close enough for Romanian rescue authorities to launch an immediate operation.

The vessel was sailing under the flag of Dominica and had 12 crew members on board. All 12 were rescued, although one crew member was reported injured. Difficult sea conditions, with waves of around 2.5 metres, added to the challenge for the rescuers.

PROGRESS IV, IMO 8358130, is a general cargo ship built in 2006, measuring approximately 122 metres in length with a deadweight capacity of around 7,400 tonnes. It had departed Sulina, Romania, on 21 August and was showing Tekirdağ, Türkiye, as its destination.

Its recent port history shows regular movements around the Black Sea, including Sulina, Constanta, Barbaros, Burgas and Poti. The vessel had also previously traded between Romanian, Turkish, Georgian and other Black Sea ports.

At the time of the incident, therefore, the vessel was effectively on a Romania-to-Türkiye voyage, with Sulina as its last recorded port and Tekirdağ as its AIS destination.

Fire, distress alert and sinking

According to Romanian authorities, the Maritime Rescue Coordination Centre in Constanta received information about a fire aboard the vessel on the evening of 27 August.

The ship was located approximately 20 nautical miles southeast of Sfântu Gheorghe in Romania’s EEZ. Romanian Coast Guard and maritime rescue units were immediately deployed.

The rescue operation involved Romanian Border Police and vessels from the Romanian Agency for Saving Human Life at Sea (ARSVOM). A nearby merchant vessel, Mohamad B, was also diverted to assist.

By around 21:00 local time, all 12 people had been rescued. Ten were recovered by Romanian Border Police, while two were rescued by the crew of the assisting merchant vessel. One of the rescued seafarers was injured.

The vessel, however, could not be saved and eventually sank.

Was PROGRESS IV hit?

This is where the incident becomes more serious — and still remains unanswered.

Romanian President Nicușor Dan said the vessel had been hit and appeared to have sunk, but stressed that it was too early to say who or what was responsible.

Romanian authorities have confirmed the fire and sinking but have not officially attributed the incident to a drone, missile, mine or any particular party. An investigation is expected to establish what happened.

There have been reports and speculation about a possible drone-related incident in the area, particularly given the continuing military activity around the Black Sea. However, there is currently no confirmed official evidence that PROGRESS IV was struck by a drone.

That distinction is important.

Another warning for Black Sea shipping

The sinking of PROGRESS IV comes at a time when the security environment around Black Sea commercial shipping is becoming increasingly complicated.

Merchant vessels continue to operate through waters affected by the Russia-Ukraine conflict, while attacks, air activity, drifting objects and unexploded ordnance have created additional risks for commercial navigation.

The PROGRESS IV incident also highlights how quickly a routine commercial voyage can turn into a life-threatening emergency.

A 122-metre cargo ship sailing from Sulina towards Tekirdağ ended its voyage in the Black Sea after a fire, with the vessel lost but all 12 seafarers brought safely back from the water.

For shipping companies and seafarers, the immediate priority will now be understanding what actually caused the fire and whether the vessel was deliberately struck.

Until the investigation provides that answer, the sinking of PROGRESS IV should be recorded as a serious Black Sea maritime casualty with a possible external impact — not yet a confirmed drone attack.