![]() Sperre Sperre (also known as AKVA group Sperre ROV Technology) is a supplier of remotely operated vehicles (ROVs). | ![]() Submergence Group Submergence Group is a company that designs, builds, and operates manned and unmanned submersibles and underwater systems. | General Dynamics European Land Systems General Dynamics European Land Systems (formerly known as Santa Bárbara Sistemas) is a company that manufactures armed vehicles. | |||
Founding Date | Founding Date 1988 | Founding Date 2007 | Founding Date 2003 | Founding Date 1967 | Founding Date 1902 |
Type | Type Subsidiary | Type Private | Type Private | Type Private | Type Private |
Tags | |||||
Locations | Locations Notodden, NO HQ | Locations Cedar Park, US HQ Chester, US | Locations Wilhelmshaven, DE HQ Hamburg, DE Barcelona, ES | Locations Zwijndrecht, NL HQ | |
Employees | Employees 620% increase | Employees 118% decrease | Employees 2,400 | Employees 422% decrease | Employees 55 |

Submergence Group is a company that designs, builds, and operates manned and unmanned submersibles and underwater systems.
View companyGeneral Dynamics European Land Systems (formerly known as Santa Bárbara Sistemas) is a company that manufactures armed vehicles.
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Turbo-Technik is a manufacturer and supplier machinery components.
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Straatman is a company that provides mooring and dredging equipment.
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