STS Foundation
STS Engineering and Maritime Construction is born.
Over 65 years developing underwater infrastructure,
offshore operations and marine engineering solutions for mining, energy, and desalination.
SWIPE
YEARS OF EXPERIENCE
MAN-HOURS WITHOUT FATAL ACCIDENTS
INTERNATIONAL CERTIFICATION
MAXIMUM OPERATING DEPTH
STS is Chile's largest and most experienced private marine and underwater engineering and construction company, and a benchmark in Latin America. Founded in 1960, it delivers underwater solutions under the highest standards of safety, quality, and technology.
More than six decades of experience support us in high-complexity projects for mining, energy, port infrastructure, and desalination, with Industrial Commercial Saturation Diving capabilities up to 300 meters deep.
Nuestra historia · 1960 – 2026
Más de seis décadas de ingeniería y construcción marítima. Cada hito, un proyecto ejecutado bajo el mar.
STS Engineering and Maritime Construction is born.
Construction of fenders for the Ventanas pier.
Installation of a new subsea pipeline, ENAP Antofagasta.
New pipeline for the Caldera plant.
Mango III Project: Pier construction, 4th Naval Zone Iquique.
New Undersea Pipeline, Vinapu Oil Terminal, Easter Island.
Seawater intake for Las Cruces Marine Culture Industry.
Underwater construction and services for offshore oil platforms in the Argentine Atlantic.
Upgrades to the Playa Brava and Punta Negra Submarine Outfalls, Iquique, Region I.
Underwater construction and services for offshore oil platforms in the Argentine Atlantic.
Launch and installation of the SAC Chile submarine fiber optic cable.
Construction of the North Pier, Quiriquina Island.
Construction of wastewater treatment plants and outfall pipes for Achao and Chaitén.
Marine structural engineering in Coloso.
Marine works, intake and discharge pipelines, pilot desalination plant — Minera Escondida.
Construction of the Lenga submarine outfall.
Marine works engineering, new desalination plant, Coloso, Minera Escondida.
Design, engineering, construction, monitoring, and maintenance of the suction siphon pre-filter, Ventanas 1 and 2 Thermal Power Plant.
High-depth recovery of gold cargo, M/V Polar Mist.
Escondida Water Supply: marine geotechnical studies for intake and discharge tunnels.
Guacolda U5 Project: seawater intake siphon for cooling, Guacolda Thermal Power Plant, Huasco.
Construction of underwater works, Escondida Water Supply (EWS) desalination plant.
Shiploader Overhaul Project, Coloso Port, Minera Escondida Limitada.
Quebrada Blanca Phase 2 — Marine Works, SKComsa.
Marine works, HDPE piping, and seawater intake and outfall tunnels, Belfi-Eurohinca Consortium for Minera Los Pelambres.
Marine construction, BUBBLES pre-filter system, desalination plant intake for Minera Escondida Limitada.
ROV Service Contract, ENAP Magallanes.
Maintenance service, Quintero Maritime Terminal, ENAP Refinerías.
Expansion of the PV4-d seawater intake hood, Centinela Pier, NCEN Project.
Comprehensive submarine engineering and construction solutions for the mining, energy, and industrial sectors.
Complete cycle of marine and subsea engineering, from conceptual to detailed design, incorporating international regulatory criteria and knowledge of the Chilean marine environment.
Explore ServicesExecution of high-complexity seabed construction works with its own major fleet and Industrial Commercial Divers, under the Zero Harm safety standard.
Explore ServicesAutonomous offshore system on own vessels, with 24/7 continuous operation for over 60 days, LARS, ROV, and Nitrox, Trimix, and Heliox gas plants.
Explore ServicesAccurate, documented inspections with cutting-edge technology, and maintenance of critical structures that extends the lifespan of subsea assets.
Explore ServicesEngineering solutions applied to the country's biggest operational challenges.
We continuously invest in the renewal of our fleet and technical equipment to ensure safe operations in the most demanding environments.
Oct. 15, 2025
Discover how we are transforming ship efficiency with cutting-edge technology and design solutions.
Ir a la publicaciónOct 12, 2025
Our technical team successfully completed the comprehensive review of the Ocean Star vessel's propulsion system.
Ir a la publicaciónOct. 9, 2025
STS is strengthening its offshore operations with specialized equipment and certified safety protocols.
Ir a la publicaciónOct. 4, 2025
We share progress on our latest developments in maritime infrastructure and predictive maintenance.
Ir a la publicaciónMore than six decades of experience developing subsea infrastructure, offshore operations, and marine engineering solutions for mining, energy, and desalination in Chile and Latin America.
STS continuously updates its equipment, systems, and vessels, embracing cutting-edge technology as a strategic guideline rather than a mere complement. This sustained decision over time is what enables the execution of highly specialized and technically demanding work in complex environments, guaranteeing first-class international operational standards. This is the hallmark that distinguishes STS and supports every project with real, proven, and certified capability.
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