TTL Subsea


TTL Subsea is pleased to offer services both in-house and in the field. Whether on-site or at our state-of the-art service facility, we can service everything from EOFL (electrical/optical flying lead) and EFL (ethernet flying lead) to MCDU pressure balanced subsea distribution units and GAF/ELI (gross alignment funnel/enhanced latch indicators) quickly, efficiently, on-time and within budget. Here of some the services and components we can manage for you:

And much more. Don't worry if you don't see it listed, just ask us. It's more likely than not that we have experience with the seabed electrical component you need.


When you are dealing with servicing and repairing electrical components and systems that need to withstand the hazards, pressures, and harshness of a subsea environment, you don’t want to hire just any electrician. You don’t want to “hope” your subsea electrical connectors are repaired properly. You want to know your subsea system has been repaired as well or better than new and that kind of peace of mind is what TTL Subsea can offer you.

Subsea Component Design and Manufacture

Custom Interconnects

Flying Leads

Electrical Cross Overs

Electrical Distribution Units

Subsea Transformers

Electrical Design

Sensor Development

Power Supply

Circuit Design

Software Development


Embedded Firmware

CAN, Ethernet, I2C, SPI, USB, RS232, MODBUS, WiFi

Sensor Networking


Subsea Electrical Testing

Thermal Qualification

Pressure Testing

Electrical Analysis

Subsea Riser Analysis

Flow Line & Umbilical Vibration Analysis

Component Repair


On Site


  • Aker
  • Ashtead
  • Cameron
  • CI
  • Clampon
  • Deep Down
  • DeepSea Tech
  • Deep Subsea
  • DGE
  • Dril Quip
  • Falmat
  • Halliburton
  • IDR
  • LLDG
  • MacArtney
  • Murphy
  • Ocean Flow
  • OES
  • Peritus
  • Pinnacle
  • Proserv
  • Seanic
  • Seatronics
  • Talos
  • Teledyne
  • Transmark
  • Trendsetter
  • Walter Oil


Do you need help with electrical maintenance? Fill out this form to get in touch.

Company Info

12600 Exchange Drive
Stafford, Texas, 77477

Got an emergency?

Don't hesitate to contact us.

We have an emergency technician ready to answer any questions you may have about any situation needed.