This report provides seismic velocity information that was generated specifically to respond to comments of the Ocean Drilling Program (ODP) Site Survey Panel on the data set provided by proponents of ODP drilling Proposal 452, which proposed drilling the Pacific margin of the Antarctic Peninsula. The velocity analyses were submitted to the ODP Site Survey Data Bank in 1996. Because of the importance of velocity information to the interpretation of the Leg 178 drilling results and, in general, to drilling results on glacial margins, we have assembled the data for publication in the Leg 178 Scientific Results volume in the form of a data report so that the results of this analytical study may become more widely available. The information presented refers to five locations on the Leg 178 outer continental shelf transect (Shipboard Scientific Party, 1999a) (Figs. F1, F2).