The Royal Thai Navy has Tested the MARCUS Vertical UAV Aboard the HTMS Angthong

 Unmanned aerial vehicle testing for maritime reconnaissance MARCUS (Maritime Aerial Reconnaissance Craft Unmanned System) on board amphibious landing ship HTMS Angthong (LPD) on June 10, 2021 is the latest achievement of the research and development project by the Naval Military Research and Development Office, NSTDA, in collaboration with the Thai private sector, namely SDT Composites, an air structure designer and manufacturer, and Pims Technologies, a developer of flight and communication control systems.The Royal Thai Navy has supplied 6 Small Tactical UASs with Orbiter 3B from Aeronautics Defense Systems Israel to be stationed in the 104 squadron. Flying 1, Naval Aviation Squadron. It has been implemented in many missions, both training and combating illegal at sea.

However, the Orbiter 3B UAV is limited in terms of transmission systems that require a launch pad and get back by attaching a parachute, it is inconvenient to operate on surface ships, even with a large helicopter flight deck, therefore, there is a need for a more suitable UAV format.The demand for maritime rotary wing unmanned aerial vehicles has already been supplied for the Schiebel Camcopter S-100. Self-reliance that has proven success from the mass production line of Narai UAV.