DEDAS is a high-fidelity submarine maneuvering and diving simulator designed to replicate the hydrodynamic behavior, control systems, and human-machine interaction environment of U209 PREVEZE/GÜR-class submarines. The system provides a safe and controlled environment in which submarine crews can develop operational proficiency, procedural discipline, and crisis response capabilities.

Operational Purpose and Role

Submarine operations—especially diving, surfacing, and depth control—require precise coordination and strict procedural compliance. DEDAS supports:

• Diving and surfacing procedures
• Trim and buoyancy management
• High-speed depth control
• Emergency and failure management training
• Torpedo firing procedure simulation
• Snorkeling operations

By enabling repetitive and risk-free execution of critical procedures, DEDAS reduces the need for high-risk real-platform training.

Doctrine and Concept of Use

U209 PREVEZE/GÜR-class submarines are core assets in Türkiye’s undersea deterrence doctrine. Their missions include:

• Sea denial and sea control
• Intelligence, surveillance, and reconnaissance
• Anti-surface and anti-submarine warfare
• Strategic deterrence patrols

DEDAS focuses specifically on maneuvering room operations and depth control management within this doctrine. Training is conducted in a team-based environment, replicating real operational command hierarchy and communication flow.

Platform Architecture

DEDAS consists of three primary components:

Full-Scale Maneuvering Room Replica

A one-to-one physical replica of the U209 maneuvering room, including authentic panel layouts, instrumentation, and control interfaces.

Six Degrees-of-Freedom Mathematical Model

The simulator models submarine motion across:

• Surge (forward/aft)
• Sway (lateral)
• Heave (vertical)
• Roll
• Pitch (trim)
• Yaw

Hydrodynamic forces, buoyancy effects, sea state conditions, and underwater current influences are integrated into the real-time simulation. Detailed algorithm parameters are not publicly disclosed.

Motion System

The motion platform provides realistic roll and pitch effects up to 45 degrees, enhancing vestibular perception and physical realism during training.

Training Capabilities

DEDAS enables simulation of:

• Diving to maximum operational depth (exact depth values are not publicly disclosed)
• High-speed submerged navigation
• Snorkel operations
• Variable sea states and underwater currents
• Seabed structure effects
• Reduced visibility conditions
• Periscope movement impact on stability
• System malfunctions and abnormal situations
• Ballast and flooding procedures

Survivability and Safety Contribution

Training on real submarines involves inherent risk during emergency drills or aggressive maneuvering exercises. DEDAS mitigates these risks by:

• Allowing safe repetition of hazardous procedures
• Exposing crews to crisis scenarios without platform risk
• Enhancing reflex-based decision-making under stress

As a result, operational safety margins increase during real missions.

Integrated Ecosystem

DEDAS is part of HAVELSAN’s broader naval simulation ecosystem. It can be integrated with tactical command-and-control simulators and other naval training systems within a networked training center architecture. Detailed network standards and integration protocols are not publicly disclosed.

Detailed Technical Information

Mathematical Modeling

• Six degrees-of-freedom submarine motion modeling
• Real-time hydrodynamic calculations
• Environmental parameter integration (sea state, currents)
• Algorithmic details not publicly disclosed

Motion System

• Up to 45° roll and pitch capability
• Real-time synchronization with simulation engine
• Vestibular realism enhancement

Simulator Cabin

• Full-scale U209 maneuvering room configuration
• Functional control panels and instrumentation
• Realistic acoustic simulation system

Instructor Consoles

• Scenario initiation and modification
• Failure injection
• Parameter control
• Performance monitoring and evaluation

Data Recording and Debriefing

• Audio and video recording
• Scenario replay capability
• Post-training performance analysis

Communication and Audio Simulation

• Internal communication simulation
• Authentic submarine acoustic environment modeling

Installation and Logistics

• Fixed-site installation
• No operational submarine required
• Maintenance cycle and personnel requirements are not publicly disclosed

Frequently Asked Questions

What is DEDAS used for?

• DEDAS is used to train submarine maneuvering room personnel in diving, surfacing, trim control, emergency response, and torpedo firing procedures without requiring a live submarine platform.

How realistic is the simulator?

• It features a full-scale replica of the U209 maneuvering room, six-degree-of-freedom hydrodynamic modeling, and a motion system capable of 45° roll and pitch simulation, providing high physical and operational realism.

What depth can it simulate?

• It supports training up to maximum operational diving depth; however, specific depth figures are not publicly disclosed.

Can it simulate emergency scenarios?

• Yes. Instructors can inject system failures, abnormal buoyancy conditions, and critical emergency scenarios in real time.

Is it mobile or fixed?

• DEDAS is a fixed-site simulator installed at naval training facilities.

Does it simulate torpedo firing?

• It does not use live ammunition but simulates torpedo firing procedures and command workflows for training purposes.

How does it improve operational safety?

• By allowing crews to repeatedly practice high-risk procedures in a safe environment, it enhances crisis management capability and reduces the likelihood of real-world operational errors.

What are its equivalents?

• Several submarine-producing nations operate similar diving and platform simulators. However, DEDAS is specifically tailored to the operational configuration of Türkiye’s U209 PREVEZE/GÜR-class submarines.

Sources

• HAVELSAN Official Website – Naval Simulation Systems Section
• HAVELSAN Product Brochures
• Public statements from the Turkish Naval Forces