In nautical and diving emergencies, every minute matters — but the first alert is often incomplete, fragmented or difficult to exploit. A victim may be at sea, underwater, on a boat, in shock, unable to describe their location precisely or to explain key medical and operational information. At the same time, several actors may need to coordinate quickly: emergency call centers, maritime rescue services, medical regulation, hyperbaric centers, firefighters, lifeboat crews and field responders. SecurDive aims to solve this gap by transforming an emergency alert into structured, geolocated and actionable data that can be shared with the right services at the right time. The challenge is to build a digital bridge between victims, witnesses, operators and rescue teams, without replacing existing emergency procedures, but by making them clearer, faster and more coordinated. We are looking for teammates who want to work on a meaningful, field-driven innovation at the crossroads of emergency response, maritime safety, health, data, UX, AI and interoperability. The mission is ambitious: design a trusted tool capable of improving how nautical and diving-related emergencies are reported, understood and coordinated.