Here we present 74 processed Expendable Bathythermograph (XBT) casts collected along the Crossroads Transect, between 16 May 2025 and 18 May 2025, during the 2025 Marion Relief Voyage on the SA Agulhas II Voyage 066. The South African component of the international South Atlantic Meridional Overturning Circulation project (SAMOC-SA) aims to characterise the time-mean and time-varying components of the SAMOC in the South Atlantic Ocean and monitor the variability of the main Southern Ocean frontal systems associated with the Antarctic Circumpolar Current (ACC), south of Africa. The Crossroads monitoring line, directly under the altimetry track N198, is sampled annually during the Marion Relief voyages, using a combination of CTD stations and XBT casts, where the XBT casts are done, at set intervals, between CTD stations to complement the CTD data.