The RAMONES NTUA team conducted field tests using the Slocum G3 underwater glider on the island of Poros, Greece on the 6th and the 7th of April 2024. The team, led by Prof. Konstantinos Karantzalos and consisting Dr. Valsamis Ntouskos, Christos Antoniou, Simon Vellas and Sotiris Spanos, conducted several test missions in the gulf of Vagionia located on the northern part of the island. The purpose of these experiments was to test the autonomous underwater glider vehicle under real conditions. This vehicle glides through the water by altering its buoyancy, allowing it to operate for extended periods, ranging from weeks to months. Following the successful experiments at Poros, the next step will be to testing additional payload added to the vehicle in the context of the RAMONES project. This includes acoustic modems for localization and communication when the glider is submerged, and the gSniffer, which measures gamma radioactivity in the water.