The Rossia Series

Our new generation of seafloor robots

Our robots are regularly operating at 900 m water depth for 12 – 18 months since 2010.

These highly reliable tele-operated systems have been regularly improved and after 10 years of development we can now offer our latest version. This small robot offers a higher payload with enhanced control electronics and can be deployed down to 6000 m water depth.

ROSSIA small, clever and with big eyes
Each crawler is delivered in a foldable transport box for easy air-freight
iSeaMC crawler delivery

Modern marine survey technologies utilze a toolbox of robotic infrastructure including ROVs , AUVs, Glider and sea floor crawlers which grant maximum success when specifically applied.

Crawler Specifications

Main Frame and caterpillar section PEHD-500
VehicleLWH 140x 100x 85 cm
Weight in air280 kg approx.
Control unitcarbon fibre with titanium grade 5 caps
Payload120 kg approx
Max depth6000 m
BuoyancySolid cell structure
Power input48 V
MotorsDunker, 600 W
Speed approx0.1 to 0.5 m/s
CameraWisenet XNP-6040H or similar
Camera 2, optionLow light Sony camera, 0,05 lux
Lights, standardUp to 140 Watt neutral white light
SensorsCTD, ADCP, turbidity, chlorophyll, methane, and others on demand
CompassTCM-XB compass

Optional equipment

Sony low light camera, 3 D laser camera for navigation and mapping, micro-optodes
PTU unit
Manipulator  Electric 5e manipulator
Surface buoy for tele-operations from ship or shore
Full autonomy package (2020)

Comparison  Crawler   /  AUV, Glider / ROV

Crawler typically monitor areas of 0.1 to 1 km2 size

Applicability  and Safety

  • simpler technology in terms of complexity, costs, and robustness, less personal intensive
  • missions can be transferred via internet onto the ship before deployment
  • can safely be switched off, energy efficient, stays on the spot.
  • qualifies for longterm operation both regarding robustness and energy efficiency


  • solid base from which to work and sample.  Sensors can be placed more precisely than with swimming robots
  • a robotic arm (on demand) allows direct access into complex habitats such as reefs (teleoperated mode)


  • not affected by current flow conditions and can return to resample locations easier
  • less personal bias in sampling. Can be operated with one person
  • at cabled observatories, experts can drive and analyze via internet

 Payload and instrumentation

  • Crawlers have a very high pay load capacity exceeding ROVs, AUVs and Glider by a factor of 10 to 15.
  • sensors and profilers can precisely penetrate the seafloor; by mounting such systems at the front of a crawler, undisturbed areas can be profiled for oxygen, pH, methane, CO2,  etc
  • very detailed transect analyses of sediment surfaces  with laser guided habitat mapping.