This report includes the primary ocean station data collected in the Pacific sector of the Southern Ocean during cruise 9405 of the Nathaniel B. Palmer. The cruise began on 10 September 1994, in Punta Arenas, Chile and ended on 16 October in Lyttleton, New Zealand (Hellmer et al. 1995). Here we describe data acquisition and reduction procedures for the vertical profiling of conductivity - temperature - depth (CTD) and dissolved oxygen, and the processing of water samples for salinity, oxygen, nutrients, carbon dioxide and chlorofluorocarbons. All CTD stations were occupied in the late winter/early spring sea ice field, in a zonal band extending from 65-72 S (Fig. 1). Originally intended as a winter reoccupation of the stations and track of NBP 9402 (Jacobs et al. 1994; Giulivi and Jacobs 1997), the work was subsequently combined with the second of two cruises focusing on sea ice properties (Jeffries et al. 1995). In addition, the sea ice and its snow cover effectively limited this cruise to the region north of the Antarctic continental shelf. Nevertheless, 16 deep stations sampled on cruise 9402 and on World Ocean Circulation Experiment (WOCE) lines S4 and P19S were revisited. The overall project objective was to obtain the first modern measurements in this largely unsampled region, at its seasonal extremes, in order to better understand the large-scale stratification and circulation, and ice-ocean interactions.