This is one of several interrelated reports concerning sound velocity, elasticity, and related properties of marine sediments from several major environments in the North Pacific and adjacent areas. Previous reports were concerned with methods, measured properties (e.g., compressional‐wave velocity, density, porosity), environmental control, empirical relationships, elastic models for saturated, porous marine sediments, and the computation of elastic moduli. These measured and computed properties were referred to 1 atmosphere pressure and 23°C; all samples were from the sediment surface (0 to 30 cm). This report is concerned with the correction of laboratory values to in‐situ values, and the prediction of in‐situ values in the absence of any sediment data.