C-Star

C-Star is Oshen’s one-metre autonomous surface vessel for persistent ocean sensing. Wind propulsion and solar-powered electronics support multi-month missions, while satellite communications and edge processing return acoustic and metocean data from distributed fleets.

Facts

  • Company: Oshen
  • Type: Surface Vessel
  • Positioning: Wind-solar endurance
  • Function: Collect ocean data
  • Audience: Marine researchers
  • Status: Commercial
  • Website: https://www.oshendata.com/

About

About C-Star

Oshen C-Star is a one-metre autonomous surface vessel for persistent ocean sensing. Wind propulsion and solar-powered electronics support missions lasting at least six months, while Iridium Short Burst Data provides satellite communication. Onboard edge processing reduces raw sensor output before transmission from remote waters.

Configurable acoustic and metocean payloads allow fleets of C-Stars to collect measurements across a distributed area. The small craft is designed to operate without a crewed support vessel continuously alongside it, although mission planning and fleet supervision remain shore-based. This record covers C-Star specifically and does not combine it with larger or earlier Oshen vehicle concepts.

Specifications

  • Communications: Iridium Short Burst Data satellite communications
  • Compute: Onboard edge processing
  • Endurance: At least six months
  • Length M: About 1 m
  • Payload: Configurable acoustic and metocean sensing payloads
  • Propulsion: Wind propulsion with solar-powered electronics

Timeline

  • Oshen raises $5M to scale C-Star production - 2026-08-20 - Funding - The Plymouth company plans to grow its fleet from roughly 50 one-metre C-Star autonomous surface vessels toward 150. Capital will support production scale-up and software for coordinating and managing larger robot constellations.… - source: thetimes.com

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Deployments

  • C Star Customer Operated Units - 1 customer-operated C-Star - 2026-08-21 - Voice of the Ocean Foundation - ocean_observation - Voice of the Ocean Foundation operates one purchased C-Star for ocean observation in Sweden after operator training and a Gothenburg-archipelago mission. - source: uk.linkedin.com
  • C Star Fleet Target - 150 C-Star vessels planned - 2026-08-20 - Global - Oshen plans to grow its C-Star fleet toward 150 vessels using the new financing. - source: thetimes.com
  • C Star Fleet Size - Roughly 50 C-Star vessels - 2026-08-20 - Global - The Times reported that Oshen has a fleet of roughly 50 one-metre C-Star autonomous surface vessels. - source: thetimes.com

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Supply

  • C-Star - Underwater Acoustic Hydrophones - Perception - SEA - SEA supplies hydrophones integrated into Oshen C-Star vessels for low-power underwater acoustic listening - source: sea.co.uk - source: sea.co.uk

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