Full Waveform Inversion (FWI) has been successfully applied to a wide range of datasets to resolve complex sediment velocities like gas clouds, shales, carbonates, etc. Most of the case studies using FWI focused on the improvements to overburden sediment sections and typically, an interpretive approach is taken for identifying the salt bodies. In the absence of clear images of sediment-salt interface, the interpretive approach relies on multiple scenarios to determine appropriate salt structure. Recently, BP demonstrated that from a good starting input model, long offset ocean bottom node (OBN) data could be used to effectively update some salt bodies such as salt fingers, overhangs salt shapes, dirty salt, mini basins and subsalt velocities to reveal better subsurface images. In this abstract, we demonstrate the application of FWI to a towed streamer datasets with limited offsets (<9 km) to successfully update salt and overhang velocity. For depth beyond the diving wave penetration, we used reflection FWI (RFWI) to further extend the reach of FWI and resolve the kinematic errors for deeper events. Our examples use a data driven velocity update flow from Perdido survey of Mexican waters of Gulf of Mexico (GoM).