the lead vessel of the class, "katanpää", began its sea trials in march 2011, but due to additional delays it was not delivered until 4 may 2012. the vessel was shipped to finland onboard biglift heavy lift vessel "happy dover" which left italy on 21 may. "katanpää" was presented to the public in helsinki on 9 july 2012, the 94th anniversary of the finnish navy. the second vessel, "purunpää", was delivered to the finnish navy on 20 august 2013 and arrived in turku onboard "happy dynamic" one month later. the third vessel, initially expected by 2015, was handed over to the finnish navy in november 2016 and will arrive in finland in december.