REMUS (Remote Environmental Monitoring UnitS) 100 is a compact, light-weight, autonomous underwater vehicle designed for operation in coastal environments up to 100 meters in depth. The REMUS 100 can be configured to include a wide variety of standard and/or customer specified sensors and system options to meet your unique autonomous mission requirements.

» Sample 900 kHz sidescan sonar imagery collected with a REMUS 100 in the Gulf of Mexcio in the fall 2004.

Vehicle Specifications
Diameter 19 cm (7.5 in)
Weight 37 kg (80 lbs.)
Max depth 100 m (328 ft)


  • Hydrographic surveys
  • Scientific sampling and mapping
  • Very Shallow Water Mine Counter Measures (VSW)
  • Pollution Detection and Monitoring
  • Pipeline Inspection
  • Undersea Search and Survey
  • Homeland Security
  • BIOMASS Survey
  • Fishery Operations

Standard Sensors

  • Bathymetry
  • Temperture
  • Water Velocities
  • Salinity
  • Sound Speed
  • Optical Backscatter
  • Diver Visibility
  • Sidescan Sonar
  • Fluorescence

Data Products

  • Sensor Data is available immediately upon recovery of the vehicle.
  • Combining the sensor data with the navigation data provides instant two and three dimensional visualization of the environmental parameters measured by the vehicle.

Survey capabilities

  • Both Search Classify and Map and Reacquire and Identify capabilities
  • Adaptive (proactive) path planning –following a plume to its source
  • Multiple Vehicle Operations: Up to four vehicles simultaneously in an area


  • Long Baseline Transponder Navigation
    Used most often for survey work. Needs at least two transponders.
  • Ultra-Short Baseline Transponder Navigation
    Used for homing, docking, and recovery. Only one transponder is required. Fix is based on range, bearing, and heading.
  • Dead Reckoned Navigation
    Used to estimate position between acoustic fixes, or when transponders are not available. Based on lateral and axial velocities from ADCP, combined with heading from compass/rate gyro. Inertial navigator extends dead reckoned accuracy to approximately 5 meters per hour of error.

Low Speed Control Hover Capable REMUS 100

Hull and Harbor security applications:
  • Unobtrusive
  • Fast, Detailed Look, in Zero Visibility
  • Saves Time/Money
  • Locate Suspicious Objects
  • Increases Confidence

Key Features of Hover Capable REMUS 100:

  • Low drag, allows long transits to target, followed by hover survey or station-keeping.
  • Can hold station in a strong current
  • Ability to autonomously maneuver at velocities between 0 to 0.5 m/s in and around ships and piers
  • Ability to autonomously follow a set of pre-programmed track lines while utilizing an acoustic navigation system at short ranges (10 - 100 m)
  • Ability to maintain precise heading when operating near large metallic objects
  • Ability to fly at a constant offset below or to the side of a ship’s hull
  • Ability to detect, locate and identify objects that are located on complex structures in a highly cluttered environment

Sensors include:

  • T-16 Inertial Navigation System
  • Iridium, WIFI and Acoustic Modems
  • Modular Docking endcap with blunt nose
  • 1200 kHz RDI ADCP
  • Imagenex 837 multibeam profiling sonar
  • Delta T Scanning Altimeter
  • Forward and Aft Tunnel thrusters