Abstract: The invention concerns deployments of RFID antennas (105, 305), used for the tracking of running equipment used in hydrocarbon exploration and production. A diverter housing (101) is provided with an RFID antenna (105, 305) disposed proximal an upper end. Accordingly, the antenna will only detect an asset (323) as it is actually run, whilst being protected by virtue of residing underneath the drill floor but above the substructure. Once a riser has been run and the riser spider (401) is removed, the antenna remain in place allowing subsequent assets such as drill pipes or tubulars to be tracked. A tension ring is also provided with an RFID antenna disposed thereon, providing similar benefits. An associated asset tracking system and a tracking method are also provided which benefit from the above-mentioned advantages over known asset tracking systems and methods.