Last week, NATO countries and partners conducted exercises in the Black Sea. Ships from the Ukrainian Navy also took part. Participating countries learned various fields of maritime warfare, including countering threats from the sea and air and communication drills. Additionally, there was a focus on leading other vessels through a fictional mine field, a procedure that reduces the threat to shipping from sea mines.
More via NATO Maritime Command website.
With Russia now harassing foreign & Ukrainian trade ships off the coast of occupied Crimea & in the nearby Azov Sea, these skills may yet get carried out for real.