An oceanographic database compiled at the Murmansk Marine Biological Institute (MMBI) is considered. The database is intended for studying climate in the geographical region of Barents, Kara, and White Seas. It contains the information acquired by marine institutions in Russia, USA, United Kingdom, Germany, Norway, and Poland for the last century. The data have came from different sources: they were obtained by the MMBI in its research missions, taken from the literature, and received from other research institutions both in Russia and abroad. As a result of applying a specialized procedure and discarding duplicates, 206 330 oceanographic stations were selected (from more than 1 000 000) and included into the CD publication.