The ECC is required in order for the Proponent to conduct Marine Controlled Source Electromagnetic (CSEM) in Walvis Basin, offshore Namibia. CSEM survey is a geophysical technique that is globally used in the offshore environment for detecting the presence of oil and gas and thus reduces the risk of drilling a dry exploration well and improves the chances for a commercial discovery especially in a frontier (high-risk area without known commercial hydrocarbon discovery) region such as offshore Namibia. EMGS has performed more than 950 surveys in frontier and mature basins across the world, from the Arctic, Canada, Brazil, Norway, USA to Australia and Angola, in water depths ranging from around 30 to 3600 m (emgs.com). Using CSEM, hydrocarbon-bearing formations can be distinguished from the surrounding formation because they are highly resistive (poor conductors of electric current). The basic principle of the proposed CSEM survey method is the application of electric and magnetic (electromagnetic) fields in the mapping or imaging of electric resistivity distribution of the subsurface in the marine environment. During the CSEM survey operations, EM field recorders / receivers are deployed on to the seafloor spaced between 1 - 2 km apart over an Area of Interest (AOI) and weighed down by environmentally benign anchors made from standard or degradable compacted sand that easily breaks down naturally after 6-9 moths. The CSEM survey uses a 50 to 300 m long horizontal dipole (single pole) source that is towed 20-30m above the seabed recorders and transmit a time-varying electromagnetic field into the earth. The field being emitted by the source is modified by the presence of subsurface resistive layers and these changes are detected and logged by an array of receivers / recorders placed on the seabed. The transmission currents are typically binary waveforms with 0.1- to 0.25-Hz (very low frequency and large wavelength). The processed data can determine the resistivity of the underlying rock. Hydrocarbon-bearing rock shows greater resistivity relative to water-bearing rock and thus areas that appear highly resistive may indicate the presence of hydrocarbons. The data sets from the proposed CSEM survey will provide critical insights into the subsurface geologic evolution, offshore basins architecture and depositional and structural history of the petroleum systems, minimises the risk of exploration well drilling and increase the chances for oil and gas commercial discovery in the Walvis Basin, offshore northcentral Namibia.