NMS Viscolul was the most successful and the longest-serving motor torpedo boat of the Romanian Navy during the Second World War.

Viscolul was a Vospers-type motor torpedo boat, one of three purchased by Romania from the United Kingdom.

She was armed with two quadruple 7.7 mm machine guns, two torpedo tubes and could carry up to eight depth charges or four mines.

In the first part of the battle, Năluca attacked the submarine with 20 mm rounds, but the latter submerged in order to escape.

[9] Thus, Viscolul remained the sole MTB of the Romanian Navy for almost two years, until 7 MAS boats were acquired in August 1943.