“These ships are undetectable by radar, highly mobile, and, in the event of enemy attack, can be easily replaced with a foot pump and a bit of patience,” he said.

Edit update april 10th

Ship decoys work as follows: when needed, a vessel launches a floating decoy that mimics a strong radar signal or heat source. The decoy is designed to deceive enemy missiles, which may mistake it for a real ship and strike it instead.

One example is the Naval Decoy IDS300, which simulates targets such as a British Type 45-class destroyer or an American Arleigh Burke-class destroyer.

The decoy is launched from one of four platforms installed on the ship, deploys within seconds, and can remain afloat for about three hours.

https://en.defence-ua.com/news/netherlands_plans_to_urgently_buy_decoys_to_spoof_russian_missiles_targeting_frigates-18118.html

I feel so trolled by reality right now.

https://en.wikipedia.org/wiki/Naval_Decoy_IDS300