L.I.M.A Autonomous Underwater Vehicle
Modular Architecture for Demanding Missions.
L.I.M.A Autonomous Underwater Vehicle
L.I.M.A is a premier autonomous underwater platform developed by Seanaut, designed for long-range missions, precise navigation, and high operational flexibility.
Equipped with advanced sensor fusion, a modular energy architecture, and a seal-less propulsion system, L.I.M.A offers a highly versatile system capable of executing complex missions independently while being easily reconfigurable for diverse operational requirements.
In future phases, the platform features a scalable infrastructure optimized for multi-vehicle coordination and swarm operations.
EXPLORE SWARM OPERATIONS
3500mm Length (Expandable) | 300mm Diameter | 120-150 kg
300m Depth Rating | 3 kts (Cruise) | 8 kts (Max/Burst)
8-12h (Core Li-lon) | Up to 10x extension via Al-Module
Seal-less Magnetic Thruster & 4-Servo "+" Tail
Active Dual-Tank Ballast (Pitch & Hover Control)
INS/IMU/DVL Fusion & Swarm Leader-Follower Coordination
Integrated Modules
ACTIVE BALLAST SYSTEM:
Forward dynamic volume control. Facilitates rapid dive initiation, downward pitch adjustments, controlled descent for seabed landing operations and real-time compensation for payload weight variations.
LI-ION POWER SYSTEM:
High-density Lithium-ion primary energy group for standard 8-12 hour operations. Equipped with an advanced Battery Management System (BMS) featuring active thermal monitoring, cell balancing, and multi-layer fault protection.
ALUMINUM BATTERY EXTENSION:
Scalable, plug-and-play high-capacity Aluminum power section. Designed for rapid deck integration, this auxiliary module maximizes energy density, delivering up to 10x extended operational time for demanding long-range missions.
HYBRID COMMUNICATION:
Combines IMU/DVL/INS sensor fusion for high-precision dead-reckoning in GPS-denied environments. Features an adaptive Acoustic, WiFi, and RF mesh network for seamless swarm coordination and rapid surface telemetry.
ACTIVE BALLAST SYSTEM:
Aft dynamic volume control. Synchronized with the forward unit to maintain absolute level trim, enable precision hovering, and secure stable seabed resting for passive monitoring.
ACOUSTIC STEALTH & SEAL-LESS DRIVE:
Designed and manufactured entirely in-house, our fully isolated magnetic coupling propulsion system eliminates shaft leaks and minimizes maintenance. Featuring custom-engineered motor and propeller designs optimized for real-world operational conditions, this seal-less architecture guarantees a heavily reduced acoustic signature for stealth operations.
Applications & Use Cases
SWARM OPERATIONS & DISTRIBUTED AUTONOMY
Coordinated multi-vehicle intelligence for scalable underwater missions
"Seanaut’s swarm concept leverages a L.I.M.A leader platform and multiple T.I.M.A units to enable coordinated multi-AUV operations, delivering distributed mission execution, wide-area coverage, and underwater network deployment capabilities."
Seanaut’s swarm operation concept enables multiple autonomous underwater vehicles to operate in a coordinated, distributed, and mission-driven architecture.
The system is built around a leader platform (L.I.M.A – Lead Intelligent Mission AUV) and multiple follower units (T.I.M.A – Tactical Intelligent Mission AUVs). The leader vehicle is responsible for mission planning, coordination, and swarm behavior management, while follower units execute tasks in a distributed and adaptive manner across the operational area.
KEY CAPABILITIES
- Coordinated swarm navigation
- Rapid wide-area coverage
- Distributed sensing and data collection
- Autonomous task allocation
- Scalable system architecture
LEADER–FOLLOWER ARCHITECTURE
- L.I.M.A (Leader): Mission planning, navigation control, and swarm coordination
- T.I.M.A (Followers): Task execution, data acquisition, and field deployment
ACOUSTIC COMMUNICATION
- Long-range underwater communication via acoustic modems
- Centralized or semi-distributed control strategies
- Real-time mission updates and adaptive behavior
DISTRIBUTED MISSION EXECUTION
- Deployment of multiple units across different locations
- Wide-area coverage and parallel task execution
- Increased operational efficiency and redundancy
UNDERWATER NETWORK DEPLOYMENT
- T.I.M.A units positioned at strategic locations to form a distributed sensing network
- Enables temporary or persistent subsea infrastructure
- Supports data relay and environmental monitoring
MISSION PAYLOAD FLEXIBILITY
Modular configuration supporting:
- Sensor-equipped reconnaissance units
- Communication relay nodes
- Logistics and payload delivery platforms
- Mobile decoy or dynamic presence platforms
In-House Subsystems
The bespoke engineering solutions that power L.I.M.A, engineered for absolute reliability in extreme environments.
Active Ballast & Trim Control System
Precision depth control and dynamic buoyancy management for stable seabed resting and payload compensation.
EXPLOREMagnetic-Coupled Thruster System
Seal-less propulsion systems eliminating dynamic O-ring failures.
EXPLOREAluminum-Seawater Battery Module (R&D)
High-density, structurally integrated power solutions for extended endurance.
EXPLORESubsea Connector Systems
Custom-machined robust connectivity solutions for deep-water deployment.
EXPLOREGround Control Station
Portable, military-grade tactical command console for advanced mission planning and swarm coordination.
EXPLORE