Despite heavy losses at Snake Island, Russian forces continue to operate at the island.
Imagery made available by Maxar shows a Project 02690 class floating crane operating at the island’s harbour – along with a Project 11770 Serna class landing craft.
The theory on social media is that the floating crane is there to recover the sunk Serna class landing craft. This is probably unlikely as in theory the weight of the ship and its cargo (likely one of the 9K331M Tor-M2 family of SAM systems) combined with the sea would take the lifting weight outside of that capable by the crane – **See below for update**
Two options are more likely. Either to recover the 9K331M Tor-M2; or to be used to transfer cargo from other ships to – or from – the island.
It is a risky operation. The floating cranes are not very maneuverable or fast. Their average speed is 6 kts.
Further imagery of the area shows another Serna class operating close to the island. Some thought “clouds” near the ship were smoke trails from Ukrainian missiles attacking the ship. This isn’t the case and it is possible the ship is dispensing smoke to try and cover/protect the operations taking place at the island.
This is clearly failing.
Getting back to the crane and the image of it operating off the harbour jetty.
There is a possibly a 9K331M Tor-M2 is on the deck. More of these have been located on the island so it does appear the crane has either assisted in, or transported, these. How long they last is another question?
Through analysis of satellite imagery from Capella Space and Sentinel, and in conjunction with historic AIS data from FleetMon, it is likely the floating crane is SPK-54150.
Capella SAR imagery dated 11 May 2022 shows a floating crane in the Pivdenna Bay area of Sevastopol.
A colour, low resolution image from sentinel for the same day shows the floating crane – the yellow colour of the crane is clearly visible.
A search of AIS data in FleetMon for the two known floating cranes operating for the Black Sea Fleet – SPK-54150 and SPK-46150 – produced an outcome for both.
SPK-54150 was last “heard” on 10 May 2022 tracking Northwest at 6 kts, not far from Karadzhyns’ka bay. I have access to S-AIS from FleetMon so this last heard means the ship switched off its AIS at this time – the data list confirms it was transmitting via Satellite.
On the other hand, the AIS for SPK-46150 was last heard on 26 March 2022. It does appear to have stayed here since then – or been operational but not used its AIS and returned to the same spot each time.
From this data then, we can conclude the floating crane is likely to be SPK-54150.
As previously mentioned, the use of the floating cranes shows a certain desperation with the Russian forces to maintain a presence on Snake Island.
It really does appear they want to stay there, no matter the risks and potential costs.
Eventually, the floating crane did recover the Serna class from the harbour. A pretty good job too as this – as I stated above – would have been at the edges of the cranes capabilities. Not known is wether it recovered the “cargo” first.