Submersible Drone Services

Our Drones

GeoAccess have recently added a submersible drone, the Chasing-Innovation Gladius Advanced Pro, to our fleet. We are now expanding our services to include underwater photography, video, surveys and inspections in a broad range of freshwater and saltwater environments.

Submersible drones have been available at the prosumer and consumer level for a little over twelve months and, like their airborne counterparts, are now being used for a range of sub-surface work in areas that were once the preserve of traditional (and expensive) Remotely Operated Vehicles (ROV). We strongly believe that we can offer a comprehensive underwater survey and inspection service, providing high resolution photography and Ultra-HD video at lower cost, without compromising quality and safety, and without having to rely on larger, cumbersome, less manoeuvrable ROV.

Gladius Advanced Pro

  • 100m operating depth, up to 4.5 hours endurance.
  • Flow resistance 2m/sec; max speed 2m/sec.
  • 100m tether that can be detached from the drum with a towable wi-fi buoy to extend operations >100m distance.
  • 2 x 1200 lumen light sources.
  • Camera: 12 mega-pixel stills & 4K UHD video at 30 frames/sec; colour filters for camera giving true underwater colour.
  • Dimensions: 432mm length; 270mm width; 114mm depth; weight <3.2kg.
  • Freshwater & saltwater capable.
  • Rapid deployment from boat and shore; 2-person crew – pilot & assistant.
  • Rapid recharge times: 1.5hr for Gladius & wi-fi buoy.


  • Visual surveys and inspections of below the waterline assets and infrastructure, including: masonry/concrete dam walls; spillways; quay walls; sheet-pile walls; scour protection; embankments; earth-fill dams; intakes & debris screens.
  • Visual surveys and inspections of below the waterline foundations for the effects of scour.
  • Visual surveys and inspections of confined spaces, including: water tanks; pipelines; flooded tunnels and shafts; service reservoirs.
  • Visual survey of lake/reservoir/river bed for silting; obstructions; debris accumulation; scour.
  • Pre-dive site survey and reconnaissance either operating independently or in conjunction with human divers: hazard identification, risk assessment.
  • Support human dive teams: safety overwatch.
  • Underwater archaeology: photography; video; reconnaissance; survey.
  • Aquaculture (fish-farms and shell-fish farms): monitoring health of stock (disease, fatalities); stocking densities; condition of cages/nets.
  • Operating environments: lakes; reservoirs; slow moving rivers; canals; tanks; pipelines; tunnels and shafts; marine on-shore and near-shore shallow waters.

Submersible Drone in action