Marine engineering and subsea construction. Operating in the South Pacific since 1960.

With over 66 years of experience, STS combines cutting-edge engineering, its own operational infrastructure, and a highly specialized team to tackle projects of varying scales in demanding environments. From conceptual design to preventive maintenance, we operate under the most rigorous standards of safety, quality, and environmental responsibility.

Specialized Services

Comprehensive submarine engineering and construction solutions for the mining, energy, and industrial sectors.

Ingeniería Marítima

Marine Engineering

Complete cycle of marine and subsea engineering, from conceptual to detailed design, incorporating international regulatory criteria and knowledge of the Chilean marine environment.
  • Conceptual, basic and detailed engineering
  • Submarine intake and discharge tunnels
  • Brine intake and disposal systems
  • Geotechnical and marine bathymetric studies
  • Modeling of marine structures
Construcción Submarina

Subsea construction

Execution of highly complex works on the seabed with our own larger fleet and Commercial Divers, under the Zero Damage safety standard.
  • Submarine outfalls, siphons and ducts
  • Water intake and discharge systems for desalination plants
  • Installation of monobuoys and dolphins
  • Pile driving and underwater structures
  • Massive underwater concreting
  • Saturation diving to 300 m
Servicios Offshore

Offshore Services

Autonomous offshore system on own vessels, with 24/7 continuous operation for over 60 days, LARS, ROV, and Nitrox, Trimix, and Heliox gas plants.
  • DVS support vessels STS Poseidon and STS Triton
  • Saturation diving to 300 m
  • State-of-the-art ROVs and USBL positioning systems
  • Nitrox / Trimix / Heliox gas plants
  • Continuous operation 24/7 for over 60 days
Inspección y Mantención

Inspection and Maintenance

Accurate, documented inspections with cutting-edge technology, and maintenance of critical structures that extends the lifespan of subsea assets.
  • Inspection with ROV, USBL and high-resolution sonar
  • Underwater photogrammetry and ultrasonic thickness measurement
  • Non-destructive testing (NDT)
  • Installation of anodes and cathodic protection
  • Maintenance of monobuoys and oil pipelines
STATE-OF-THE-ART TECHNOLOGY

Robotic Infrastructure and Life Support

Our operations rely on our own technological fleet, which minimizes dependence on third parties and guarantees immediate response times for every job.

Engineering milestones on the Pacific coast: PV4-d intake (Nueva Centinela) · Quintero Terminal Monobuoy (ENAP) · ROV service (ENAP Magallanes).

  • ROVs Working Class
  • Hyperbaric Chambers
  • Multibeam Sonar
  • LARS Systems
  • Nitrox/Heliox Mixtures
  • Hydraulic Tools
Infraestructura robótica y soporte de vida STS

Get in touch with us and let's talk.

More than six decades of experience developing subsea infrastructure, offshore operations, and marine engineering solutions for mining, energy, and desalination in Chile and Latin America.