Scientific Research Fleet of USSR, designed by Anatoly Aksamit and issued by the USSR on December 25, 1979. I have not engraver names.
"Vulcanolog", research vessel to explore the underwater volcanic and seismic activity in the Pacific.

"Professor Bogorov", research vessel for oceanographic research.

"Ernst Krenkel", research vessel for comprehensive research.

"Cosmonaut Vladislav Volkov", research vessel to perform tasks of space communications.

"Cosmonaut Yuri Gagarin", research vessel to perform tasks of space communications.

"Academik Kurchatov", research vessel for comprehensive research.
