Ukraine claims it hit a Russian ship with a 'Sea Baby' drone. Russia is fast running out of space to repair them.

• Ukraine claims to have struck two Russian vessels with "Sea Baby" drones this week. 
• If confirmed, the damage will ramp up pressure on the Black Sea Fleet's strained repair facilities. 
• This is likely to compound Ukraine's advantages in the waters over time, an expert told Insider. 

Ukraine doubled down on claims on Friday that it had damaged a Russian patrol ship near Sevastopol with "Sea Baby" drones.

If confirmed, the strike could add to long-term pressure on Russia's ability to maintain and repair its Black Sea Fleet, experts say.