The objective of the physical-biogeochemical measurement program implemented during RV METEOR cruise M189 during early summer 2023 was to measure the variability of the circulation and the coastal upwelling off Angola and Namibia. The expedition concentrated on examining processes pertinent to coastal upwelling, greenhouse gas generation, emission dynamics, and biological productivity. The investigated physical processes encompassed wind-induced oceanic forcing, the influence of tide-generated internal waves and their consequential turbulent mixing, the impact of freshwater inputs, and the dynamic processes associated with the Angola-Benguela Front. During the METEOR expedition M189, 12 Hereon Drifters were strategically deployed in two distinct locations, 9 Drifters were deployed around (10.58° S; 13.45° E) and 3 Drifters were deployed around (10.70° S; 13.2° E). The drifters were designed and built at Helmholtz-Zentrum Hereon to follow the upper surface flow (approx. 50 cm). The main body of the Hereon drifters consists of a 7.5 cm x 20 cm long tube with a flotation ring at the top. It is attached to a drogue of 35 cm in both length and diameter through a flexible cord within a distance of 20 cm to the tube. When deployed about 5 cm of the tube protrude from the water surface, resulting in a ratio of drag area inside to drag area outside the water of 21. The tube contains a battery pack and an electronic board, which acquires and reports the GPS position every 5 minutes via a global satellite network in near real time.