DSEI 2025: SubSea Craft’s VICTA Hybrid Vessel Debuts as High-Speed Surface/Submersible Platform for Special Forces

At DSEI 2025 in London, UK-based SubSea Craft showcased the latest iteration of its VICTA Diver Delivery Unit (DDU), a hybrid high-speed surface vessel and submersible platform designed to support special operations forces (SOF) in maritime environments. The platform is engineered to rapidly transit on the surface before submerging to conduct stealthy underwater infiltration missions—bridging the operational gap between rigid-hulled inflatable boats (RHIBs) and swimmer delivery vehicles (SDVs).

Hybrid Design for Covert Maritime Operations

The VICTA represents a novel approach to maritime special operations mobility by integrating surface speed with submerged discretion. Measuring approximately 11.95 meters in length and displacing around 9 tonnes when fully loaded, the craft is capable of carrying up to eight personnel—two crew and six combat divers—with their equipment.

On the surface, VICTA operates like a high-performance RHIB powered by a Seatek diesel engine driving a waterjet propulsion system. It achieves speeds up to 40 knots in sea state 3 conditions. Once near the target area, it transitions into submersible mode using onboard lithium-ion batteries that power twin electric thrusters for silent underwater operation at depths up to 30 meters.

The transition from surface mode to submerged operation takes under two minutes—a key feature that enables rapid mission execution while minimizing detection risk. This dual-mode capability is particularly suited for clandestine insertion/extraction of SOF teams in contested littoral zones.

Mission Profile and Operational Use Cases

VICTA is optimized for short-range insertion missions where speed and stealth are critical. Its primary mission profiles include:

Covert beach reconnaissance and surveillance
Insertion/extraction of special forces behind enemy lines
Support for sabotage or direct-action raids on coastal infrastructure
Underwater approach to maritime targets such as ships or oil platforms

The craft’s hybrid nature enables it to launch from larger naval platforms or shore bases and operate independently without requiring dedicated submarine support—significantly increasing flexibility for naval SOF units.

Crew Systems and Human-Machine Interface

SubSea Craft has emphasized advanced human-machine integration within the VICTA platform. The cockpit features a digital fly-by-wire control system with touchscreen interfaces developed in collaboration with SCISYS (now CGI). Navigation is supported by inertial navigation systems (INS), GPS/GNSS integration, sonar mapping tools, and forward-looking sonar (FLS) for submerged obstacle avoidance.

Crew situational awareness is enhanced through helmet-mounted displays (HMDs) linked to onboard sensors. Life-support systems include onboard oxygen rebreathers compatible with diver gear, internal climate control for temperature regulation during submerged phases, and emergency buoyancy systems.

The vessel’s pressure hull is not fully enclosed like traditional submarines but rather semi-enclosed with an open cockpit design protected by canopies during surface transit. During submerged operation, divers remain inside the flooded cockpit using rebreathers—a concept similar to legacy SDVs like the US Navy’s Mk VIII Mod 1 but integrated into a faster surface-capable hullform.

Development Timeline and Testing Milestones

The VICTA program began development in earnest around 2018–2019 with funding from private investors rather than government contracts. A full-scale prototype was first unveiled at DSEI 2019 but has undergone significant redesigns since then based on hydrodynamic testing and user feedback from UK SOF stakeholders.

Key milestones include:

2020–2021: Hydrodynamic testing at QinetiQ’s Ocean Basin facilities in Gosport; refinement of control surfaces and hull geometry.
2022–2023: Sea trials off the south coast of England; validation of transition time between modes; endurance testing under various loadouts.
Late 2024: Integration of new battery modules offering extended submerged endurance (~25 nautical miles underwater at ~6 knots).

DSEI 2025 marks its most mature public appearance yet—with several NATO-aligned navies reportedly evaluating the system under classified programs focused on littoral strike capabilities.

Market Positioning and Export Potential

The global market for hybrid DDUs remains niche but strategically important as great power competition increasingly emphasizes gray-zone operations in contested maritime regions such as the South China Sea or Baltic littorals. Platforms like VICTA offer smaller navies or special operations commands an asymmetric toolset without requiring large submarine fleets or aircraft carriers.

The UK Ministry of Defence has not publicly confirmed procurement plans but has facilitated trials via DSTL-managed innovation pathways. Meanwhile, interest from Gulf Cooperation Council (GCC) states—as well as European NATO members—is reportedly growing amid rising demand for agile coastal defense capabilities against irregular threats such as maritime terrorism or proxy sabotage units.

Tactical Implications for Littoral Warfare

The emergence of multi-domain special operations platforms like VICTA reflects broader doctrinal shifts toward distributed lethality and expeditionary disruption tactics. By enabling SOF teams to bypass traditional access-denial measures through sea-surface/subsurface maneuvering, such platforms complicate adversary ISR planning cycles while preserving plausible deniability during peacetime shaping operations.

If adopted at scale—or integrated into multinational task groups—hybrid SDVs could serve as force multipliers during amphibious raids or pre-invasion shaping campaigns by neutralizing early-warning radar sites or sabotaging port infrastructure ahead of conventional assaults.

Conclusion

DSEI 2025 confirms that SubSea Craft’s VICTA is no longer just a conceptual prototype but a near-operational platform poised to redefine how special forces access denied coastal zones. Its dual-mode architecture offers unprecedented flexibility across both kinetic missions and intelligence-gathering tasks—addressing urgent capability gaps identified by NATO SOF communities facing increasingly complex maritime threat environments.