The Envirtech MKIV, 3-Metres buoy, is state of the art in met-ocean data gathering. In standard configuration it includes a solid-state MEMS directional wave measurement pack, an automatic weather station (AWS)and a sea surface temperature transducer. Payloads can be expanded with further instrumentation to measure bio-chemical and physical parameters, like multi-parameter probes, ADCPs, multi-satellite, multi-channel receiver for iSSH measurement (tide). The buoy dimensions, the focal light height and the radar corner reflector allow good visibility in any conditions, day or night. The buoy is the ideal solution for permanent floating laboratories.