RV "Ob" (flagship; captain I A Man) and "Kooperatsiya" (captain A S Yantselevich), used mainly as a transport vessel.
RV "Ob" (flagship; captain I A Man) and RV "Lena" (captain A I Vetrov). The third ship was "Kooperatsiya" (captain A S Yantselevich), used mainly as a transport vessel.