The Ukrainian Navy says ships of the Russian Black Sea fleet have withdrawn to more than 100 kilometers (about 65 miles) from Ukrainian shores as a result of its attacks with missiles and drones.
In an operational update Monday, the Navy said that in an effort to regain control of northwestern parts of the Black Sea, the Russians had deployed coastal missile systems in the Crimea and Kherson regions.
It said the threat of missile strikes from the sea remains.
"Since the beginning of the invasion, enemy ships and submarines have launched more than 300 cruise missiles on Ukrainian territory. Currently, the intensity of strikes with Caliber cruise missiles has decreased, while the enemy began to hit ground targets with anti-ship missiles. ... Probably, this indicates that Russia has used a significant amount of modern missile weapons and is forced to use outdated types of missiles."
The Navy said approximately 30 Russian ships and submarines continued the blockade of civilian shipping. "Currently, there are up to 12 large landing ships in the Black Sea, but more than a third of them are under repair," the Navy said.
"We deprived the Russian Black Sea Fleet of complete control over the northwestern part of the Black Sea, which has become a 'gray zone.' At the same time, the enemy has adopted our tactics and is trying to regain control of the northwestern part of the Black Sea through coastal missile systems and air-based cruise missiles."
The statement added there was still the risk of the Russians' landing tactical troops and sabotage and reconnaissance groups on the Odesa coast, especially in favorable weather conditions in summer.