 Due to service problems and wear, project 664 class boats were relatively quickly phased out in the 1980s, after only 9 to 14 years of service.The only one preserved was ORP "Odważny" - in 1990 it was given to the White Eagle Museum in Skarżysko-Kamienna.Its original twin 30 mm AK-230 gun is however replaced with twin 25 mm 2M-3M gun.