NUREMBERG, Germany — Feb. 25, 2026 : German manufacturer Rotinor GmbH is presenting its Black Shadow 730 electric diver propulsion device (DPV) at Enforce Tac 2026, outlining the system as a low-signature underwater mobility platform for maritime special operations forces. The company is positioning the platform as an intermediate capability between individual fin swimming and larger swimmer delivery vehicles (SDVs), with an emphasis on extended range, payload flexibility, and modular deployment options.
Technical Configuration and Propulsion System
The Black Shadow 730 is built around Rotinor’s patented E-jet water-jet propulsion architecture. Unlike conventional diver scooters that rely on exposed propellers, the E-jet system uses an internally enclosed rotating impeller to accelerate water through a jet channel. The configuration eliminates exposed moving parts and reduces both acoustic and visual signatures compared with combustion-powered or open-propeller systems. The unit operates electrically and is emission-free.
Power is supplied by high-energy lithium iron phosphate (LiFePO4) battery modules driving an 8 horsepower (5.9 kW) electric motor. The propulsion system offers ten selectable power levels, allowing operators to regulate output from low-observable transit speeds to maximum sprint performance.
Performance specifications for the Black Shadow 730 variant include:
-
Motor Output: Up to 5.9 kW (8 hp)
-
Thrust: Up to 735 Newtons
-
Top Speed: Up to 12.5 km/h
-
Maximum Range: Approximately 20 km
-
Endurance: More than three hours of average operating time
-
Maximum Diving Depth: 60 meters
-
Length: Approximately 1.76 meters
-
Weight: Approximately 110 kilograms
The platform is designed to maintain thrust efficiency while carrying additional payloads or supporting two-person operations via a T-bar towing belt configuration.
Control Architecture and Navigation Systems
Rotinor has incorporated ergonomic and digital control features intended to reduce operator workload during extended underwater missions. The Black Shadow is controlled via twin grips fitted with piezoelectric sensors and a trigger-based throttle system. An automatic emergency stop function activates when the throttle trigger is released.
Steering is achieved by shifting body weight while secured in a dedicated harness system. The harness is engineered to absorb thrust loads and minimize arm fatigue during prolonged high-power operation.
A central cockpit integrates an illuminated TFT display providing real-time operational data, including:
-
Power setting level
-
Remaining battery capacity and endurance
-
Current depth
-
Water temperature
-
Elapsed mission time
Navigation aids include a digital bearing scale and target marker system. For operations in low-visibility or confined environments, the Black Shadow integrates active sonar imagery to enhance obstacle detection and situational awareness. Optional multi-level LED headlight systems are available for turbid water or night operations.
Deployment Methods and Modularity
The Black Shadow 730 has been developed with multiple insertion and launch concepts to limit exposure of surface vessels in contested environments.
Documented and proposed deployment options include:
-
Submarine Launch: Compatibility with submarine torpedo tube deployment concepts.
-
Aerial Insertion: Para-drop capability using a dedicated parachute harness system for fixed-wing aircraft or helicopter deployment.
-
Surface Launch: Conventional deployment from rigid-hull inflatable boats or support vessels.
The system’s modular structure allows adaptation for different mission payloads, including sensor packages, explosive charges, or reconnaissance equipment.
Mission Profiles
Rotinor outlines three primary operational categories for the Black Shadow platform:
Covert Reconnaissance and Hydrographic Survey
The DPV extends approach distances while preserving diver stamina for objective-area tasks. It supports sensor emplacement and underwater mapping missions.
Offensive Combat Diving
The system facilitates ship sabotage, port infrastructure interdiction, clandestine sensor placement, and emplacement of explosive charges. Two-person transport capability increases payload carriage capacity compared with single-operator scooters.
Defensive and Constabulary Operations
The Black Shadow can support port security, hull inspection, underwater explosive ordnance disposal (EOD), and maritime law enforcement tasks. Sonar-assisted navigation reduces collision risk and shortens search timelines.
Market Position and Adoption
The Black Shadow 730 is marketed primarily to NATO-aligned armed forces and specialized maritime law enforcement units. Poland’s Formoza naval special operations unit, part of the Polish Navy, has procured multiple systems under a multi-million zloty contract.
Open-source reporting has indicated testing and evaluation interest from U.S. special operations entities. Rotinor continues to present the platform at European defense and security exhibitions as part of its international marketing strategy.
Within the global DPV market, the Black Shadow is positioned against systems such as the U.S.-manufactured Stidd DPD and propulsion platforms produced by Italy-based SUEX. Larger enclosed swimmer delivery vehicles, including the Torpedo Seal, occupy a higher tier in terms of cost, complexity, and logistical requirements.
Rotinor differentiates the Black Shadow through its jet-drive propulsion architecture, integrated digital navigation and sonar suite, relatively high sprint speed, and compatibility with aerial and submarine insertion concepts.
Company Background
Rotinor GmbH is a German manufacturer specializing in high-performance diving propulsion systems. In addition to the Black Shadow line, the company produces other submersible mobility platforms, including the Divejet RD2 compact submersible.
At Enforce Tac 2026, Rotinor is presenting the Black Shadow 730 as a scalable underwater mobility solution intended for integration into naval special forces, coast guard special units, and counterterrorism formations responsible for maritime and critical infrastructure security.
——— End of Article ———
