SeaTrac SP-48
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Solar-powered 4.8 m uncrewed surface vehicle for persistent ocean data collection, communications relay, and sensor payload missions.
SeaTrac SP-48 is a dual-use, solar-powered uncrewed surface vehicle developed by SeaTrac Systems in Massachusetts. It is built around persistent ocean data collection, communications relay, environmental monitoring, hydrography, mobile subsea positioning, metocean sensing, and maritime-domain-awareness missions. Official specifications describe a 4.8 m USV with 70 kg payload capacity, up to 500 W payload power for day-long missions, solar-supported operation, 5 kt maximum speed, months of endurance, self-righting keel, over-the-horizon operations, automated collision avoidance, and support for payloads including ADCPs, multibeam sonar, side-scan sonar, sub-bottom profilers, environmental samplers, hydrophones, acoustic modems, USBL/LBL systems, cameras, radar, and custom radios.
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Notas
SeaTrac official material describes SP-48 as a persistent solar-powered USV for real-time data collection and communications. The 2021 SP-48 datasheet lists 4.8 m length, 1.39 m width, 0.42 m draft, 275 kg empty weight, 70 kg payload capacity, 1000 W brushless motor, 6.75 kWh lithium battery, 750 W solar generation at 1 kW/m2 irradiance, up to 5 kt speed, months of endurance, Beaufort 7 operating sea state, Beaufort 11 survival sea state, satellite/cellular/radio/Wi-Fi communications, and manual, supervised-autonomy, and full-autonomy control modes.
