In the 6th edition of Landolt-Börnstein, the field of oceanography was incorporated into the volume on "Astronomy and Geophysics" (1952) and covered 116 pages. Since that time, the tremendous increase of knowledge and the growing significance of oceanography called for a new compilation which appears as Volume V/3 of the New Series. The topics dealt with in this volume belong to physical oceanography, a part of geophysics and physics. Two chapters on "Topography" and "Coastal Oceanography" represent peripheral areas, since they are more geographically oriented. On the other hand, they are very pertinent to the physics of the ocean. Due to the large amount of information covered, Volume V/3 is divided into three subvolumes with a total of some 1200 pages. Subvolumes a and c have already appeared. Subvolume a deals with the topography of the oceans, measuring techniques and instruments and the properties of sea water. Subvolume c contains chapters on ocean waves, upwelling regions, ice in the ocean and coastal oceanography. The present subvolume b covers the ocean circulation and the ocean turbulence.