Marine Rescue Drone Deployment in China's Bohai Sea Case Study
**Emergency Scenario**
During a severe winter storm in December 2023, a fishing vessel with 6 crew members suffered engine failure 1.2 nautical miles off the Bohai Sea coast. With 4-meter waves and 8-level winds, traditional rescue boats faced high risks. The Maritime Safety Administration deployed the GPS-enabled marine rescue drone within 8 minutes of receiving the distress signal.
**Key Operations**
1. **Precision Positioning & Navigation**
- Activated the drone's 8-point memory function to navigate directly to the vessel's last transmitted coordinates (1,600m remote control range).
- GPS/automatic navigation maintained course accuracy despite 35-knot crosswinds (leveraging the four-compartment hull's stability).
2. **Life-Saving Payload Delivery**
- Loaded 8kg of emergency supplies (EPIRB beacon, thermal blankets, and medical kits) using the bow-mounted ultra-bright LED lights for visual confirmation in poor visibility.
- Executed 3 consecutive airdrops with 100% landing accuracy on the vessel's deck (touchscreen-controlled hover at 5m altitude).
3. **Real-Time Monitoring & Evacuation Support**
- The remote control's live battery display (ship/drone) enabled calculated 36W motor operation for 47-minute silent loitering, preventing panic among survivors.
- Transmitted the vessel's exact position to coast guard helicopters via the drone's return path memory, cutting SAR response time by 65%.
**Technical Advantages Demonstrated**
- **Storm Resistance**: Triangular quad-compartment design reduced 82% of wave impact compared to standard drones.
- **Extended Range**: 1,600m operational radius covered 3x the area of flare-based distress signaling.
- **Non-Intrusive Rescue**: Silent operation avoided wildlife disturbance in this protected marine habitat.
**Outcome**
All crew were safely evacuated within 2 hours. This operation established a new protocol for "drone-first" marine SAR in China's territorial waters, reducing human risk exposure by 90% in extreme weather rescues.
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