Of the Polnocy-class (type 771) designed in Polen in cooperation with the Soviet navy and between 1967 and 2002 built by the Stocznia Polnocna. Totally were 107 units built although of several types. The Russian project 773 with a displacement of 1.120-1.150 tons and as dimensions 75 x 9,6 x 2,3 metres. In Russian service armed with 4 Strela missile launchers, 2x2-3cm guns and 2x17 14cm rocket launchers, in Vietnamese service 2-4 3cm guns and 2-16cm rocket launchers. Vietnam has three of these ships purchased between 1979 and 1980, in 2000 still in existence. Heir crew numbered 19 men.
