U-Boat Worx builds and rents manned personal submarines. U-Boat Worx models includes manned personal submarines that can accommodate from one to 11 people and operate to depths of 100 meters up to 3,000 meters.
U-boat Worx has a custom submarine program that lets owners be part of the design process.
Every U-Boat Worx submersible is designed, engineered and built to the highest possible standards and registered with the leading classification society, DNV.
The entire design and engineering function is carried out in-house by our highly experienced and professional work force. Using leading edge 3D design and FEM software, their expert engineers craft proven core components that are unique to their brand. The modular design philosophy provides for total flexibility to cater for each and every customer requirement.
It’s the largest manned submersible manufacturer, largest commissioned vessels and number of employees and units in active use.

It has delivered more submersibles than all active manufactures combined. First manufacturer to produce a full range of submersibles to suit a diverse and discerning customer base.
In addition to U-Boat Worx’s stringent internal quality control and assurance procedures, every submarine is subjected to extensive and exhaustive testing including hydro-static pressure tests and material qualifications prior to in-house bench testing, followed by harbor then full sea trials before final delivery.
U-Boat Worx is on the cutting edge of technology and leads the world in submersible development ensuring that our customers are always diving with the best of the best.
Testimony to our achievements is catalogued with the following innovations:
- Introduction of flexible ballast tank technology; enhancing performance and reducing storage space requirements
- Introduction of the MANTA controller, allowing for supervised passenger operation
- First fully certified manned submarines with Lithium-ion battery technology
- Introduction of the MARLIN controller making for simple launching and recovery using wireless surface control
- U-Boat Worx are globally recognised, gaining numerous industry accolades including the prestigious “Red Dot” award