They were built at the Galați shipyard and launched in 1943, being armed with two German 88 mm naval guns.

Work on them was disrupted by the Soviet invasion of Romania in late 1944 and was only resumed in 1949.

By 1960, the two German naval guns were replaced by Soviet 85 mm naval guns.

The four ships were modernized in 1976, being mounted six AA guns of 37 mm and four machine guns of 14.5 mm, as well as mine launching rails, the ships being able to carry up to 50 mines each.

This article about a specific naval ship or boat is a stub.