Services
Navigation / Shipping
-
Underwater inspections for the recertification of IWS vessels
(certified by Germanyshare, Lloyd’s, GL – DNV, BV)
-
Navigation support, specialists in rudders and propellers
-
Certified Underwater structural welding
(certificado internacional de soldadura WPS/AWS; Instalações de Zincos)
-
Crack Sealing and Filling
-
All general work relating to shipping
Market leader in Portugal, with comprehensive coverage across all national ports.
Subcentro combines decades of experience with state-of-the-art technology to offer high-standard ship maintenance solutions. Certified by the leading classification societies, we ensure that your fleet maintains maximum operational efficiency with minimal environmental impact.
IWS (In-Water Survey) Inspections: Surveys certified by DNV, Lloyd’s Register, ABS and Bureau Veritas, using high-definition video (CCTV) and underwater photography systems for immediate reclassification.
Repair Engineering and Welding: Carrying out structural repairs and AWS/WPS-certified underwater welding, enabling work to be carried out ‘in situ’ without the need for dry docking.
Propulsion Efficiency and Performance: Specialised maintenance of propellers, shafts and rudders, focused on hydrodynamic optimisation and reducing fuel consumption.
Sustainable Cathodic Protection: Installation and management of anode systems for corrosion control, with rigorous selection of materials to minimise the dispersal of waste into the marine ecosystem.
Environmental Commitment: Operations carried out under strict sustainability protocols, using technologies that prevent water contamination and protect the biodiversity of our ports.
Marine Works
-
Demolition and Refurbishment of Structures
-
Infrastructure Construction and Maintenance
Construction and maintenance of critical infrastructure in aquatic environments, combining cutting-edge technology with professional diving expertise.
-
Pier Construction
Slipways, realignments, installations, repairs, fender fixings; Bridges; Dams
-
Maintenance of Dams and Bridges
Specialist repair and diagnostic services for large-scale water infrastructure
-
Maintenance of Technical Installations
Carrying out complex projects involving the installation and securing of submerged equipment
-
Port Infrastructure Maintenance
Complete refurbishment of terminals, slipways and berthing structures
-
Corrosion Control
Technical interventions on supporting structures to mitigate marine wear and structural erosion
-
cGeotechnics and Site Preparation
Shore-up and stabilisation of foundations for the installation of heavy structures
-
Precision Structural Installations
Positioning and securing components with millimetre-level precision in environments with reduced visibility
-
Foundation Consolidation and Reinforcement
Riverbed treatment and protection against scour at pile foundations and submerged structures
-
Underwater inspections
Documented through technical reports and digital imagery of submerged structures for project design and project support
Dredging
-
Dredging of Sand and Sludge
-
Sediment Dredging
-
Dredging of Industrial Waste
-
Dredging (Air-Lifty)
-
Dredging using suction pumps with a disperser and repulsion system
-
Assistance with the salvage and towing of the vessel
-
Monitoring of environmental protection measures
Industrial Complexes
-
Inspections of fire-fighting water tanks
-
Inspections of tanks, tunnels and pipework
-
Restoration of submerged structures
-
Epoxy resin injections
-
Underwater concrete placement
-
Formwork construction
-
Sediment sampling
Submarine Outfalls
-
Photographic Inspections
-
Video Inspections
-
Implementation
-
Maintenance
-
Repair
Underwater Cutting and Welding
-
Underwater welding
-
Underwater cutting using an ultra-thermal process
-
Implementation
-
Maintenance
We are specialists with an international welding certificate, in accordance with AWS D3.6M:2010 – Class B
Underwater Demolition
-
Demolitions
-
Rock Breaking
Accredited by the National Explosives Commission under authorisation no. 6325
Rescue and refloating of vessels
-
Underwater inspection and assessment of the vessel
-
Technical planning for the refloating operation
-
Temporary sealing of watercourses
-
Use of lift balloons and other refloating systems
-
Removal of underwater obstacles and debris
-
Assistance with the salvage and towing of the vessel
-
Monitoring of environmental protection measures
Our specialist team provides salvage services for sunken or partially submerged vessels, operating swiftly, safely and with technical precision. We have qualified professional divers and the appropriate equipment to respond to emergency situations in ports, marinas, rivers and coastal areas.
Each operation is carefully planned, from the initial assessment of the vessel’s condition and the site conditions, through to the implementation of the most appropriate lifting and stabilisation techniques. Our aim is to recover the vessel efficiently, minimising risks to people, property and the environment.
Agriculture
-
Irrigation Dams
-
Repair of Water Intake Systems
-
Repair of Sluice Gates
-
Repair of Ducting Systems
(International WPS/AWS welding certificate; Zincos facilities)
-
Leak Detection
Stripping and High-Pressure Water Jet Cleaning
-
Treatment
-
Maintenance
Construction, Repair and Restoration of Historic Heritage
We provide specialist services in the field of historic architectural heritage, both above and below water, where standard construction practices prove inadequate.
Other Services
-
Underwater Inspections
Filmed, with images captured in digital format, reports produced in digital format, and photographs in digital format
-
Image Collection
Via open circuit and via live monitoring (closed circuit), in real time
-
Inspection of Public and Private Construction Projects
-
Projects
Project support in the field of maritime and river hydraulics, provided by a Civil Engineer from the I.S.T., specialising in maritime works
-
Hydrology
-
Inspections and Image Capture
Inspections and video footage capture above water using a drone and underwater using an ROV
-
Sediment and Sample Collection
-
Underwater Surveys
Navigation / Shipping
-
Underwater inspections for the recertification of IWS vessels
(certified by Germanyshare, Lloyd’s, GL – DNV, BV)
-
Navigation support, specialists in rudders and propellers
-
Certified Underwater structural welding
(certificado internacional de soldadura WPS/AWS; Instalações de Zincos)
-
Crack Sealing and Filling
-
All general work relating to shipping
Market leader in Portugal, with comprehensive coverage across all national ports.
Subcentro combines decades of experience with state-of-the-art technology to offer high-standard ship maintenance solutions. Certified by the leading classification societies, we ensure that your fleet maintains maximum operational efficiency with minimal environmental impact.
IWS (In-Water Survey) Inspections: Surveys certified by DNV, Lloyd’s Register, ABS and Bureau Veritas, using high-definition video (CCTV) and underwater photography systems for immediate reclassification.
Repair Engineering and Welding: Carrying out structural repairs and AWS/WPS-certified underwater welding, enabling work to be carried out ‘in situ’ without the need for dry docking.
Propulsion Efficiency and Performance: Specialised maintenance of propellers, shafts and rudders, focused on hydrodynamic optimisation and reducing fuel consumption.
Sustainable Cathodic Protection: Installation and management of anode systems for corrosion control, with rigorous selection of materials to minimise the dispersal of waste into the marine ecosystem.
Environmental Commitment: Operations carried out under strict sustainability protocols, using technologies that prevent water contamination and protect the biodiversity of our ports.
Marine Works
-
Demolition and Refurbishment of Structures
-
Infrastructure Construction and Maintenance
Construction and maintenance of critical infrastructure in aquatic environments, combining cutting-edge technology with professional diving expertise.
-
Pier Construction
Slipways, realignments, installations, repairs, fender fixings; Bridges; Dams
-
Maintenance of Dams and Bridges
Specialist repair and diagnostic services for large-scale water infrastructure
-
Maintenance of Technical Installations
Carrying out complex projects involving the installation and securing of submerged equipment
-
Port Infrastructure Maintenance
Complete refurbishment of terminals, slipways and berthing structures
-
Corrosion Control
Technical interventions on supporting structures to mitigate marine wear and structural erosion
-
cGeotechnics and Site Preparation
Shore-up and stabilisation of foundations for the installation of heavy structures
-
Precision Structural Installations
Positioning and securing components with millimetre-level precision in environments with reduced visibility
-
Foundation Consolidation and Reinforcement
Riverbed treatment and protection against scour at pile foundations and submerged structures
-
Underwater inspections
Documented through technical reports and digital imagery of submerged structures for project design and project support
Dredging
-
Dredging of Sand and Sludge
-
Sediment Dredging
-
Dredging of Industrial Waste
-
Dredging (Air-Lifty)
-
Dredging using suction pumps with a disperser and repulsion system
-
Assistance with the salvage and towing of the vessel
-
Monitoring of environmental protection measures
Industrial Complexes
-
Inspections of fire-fighting water tanks
-
Inspections of tanks, tunnels and pipework
-
Restoration of submerged structures
-
Epoxy resin injections
-
Underwater concrete placement
-
Formwork construction
-
Sediment sampling
Submarine Outfalls
-
Photographic Inspections
-
Video Inspections
-
Implementation
-
Maintenance
-
Repair
Underwater Cutting and
Welding
Welding
-
Underwater welding
-
Underwater cutting using an ultra-thermal process
-
Implementation
-
Maintenance
We are specialists with an international welding certificate, in accordance with AWS D3.6M:2010 – Class B
Underwater Demolition
-
Demolitions
-
Rock Breaking
Accredited by the National Explosives Commission under authorisation no. 6325
Rescue and refloating of
vessels
vessels
-
Underwater inspection and assessment of the vessel
-
Technical planning for the refloating operation
-
Temporary sealing of watercourses
-
Use of lift balloons and other refloating systems
-
Removal of underwater obstacles and debris
-
Assistance with the salvage and towing of the vessel
-
Monitoring of environmental protection measures
Our specialist team provides salvage services for sunken or partially submerged vessels, operating swiftly, safely and with technical precision. We have qualified professional divers and the appropriate equipment to respond to emergency situations in ports, marinas, rivers and coastal areas.
Each operation is carefully planned, from the initial assessment of the vessel’s condition and the site conditions, through to the implementation of the most appropriate lifting and stabilisation techniques. Our aim is to recover the vessel efficiently, minimising risks to people, property and the environment.
Agriculture
-
Irrigation Dams
-
Repair of Water Intake Systems
-
Repair of Sluice Gates
-
Repair of Ducting Systems
(International WPS/AWS welding certificate; Zincos facilities)
-
Leak Detection
Stripping and
High-Pressure Water Jet
Cleaning
High-Pressure Water Jet
Cleaning
-
Treatment
-
Maintenance
Construction, Repair and
Restoration of Historic
Heritage
Restoration of Historic
Heritage
We provide specialist services in the field of historic architectural heritage, both above and below water, where standard construction practices prove inadequate.
Other Services
-
Underwater Inspections
Filmed, with images captured in digital format, reports produced in digital format, and photographs in digital format
-
Image Collection
Via open circuit and via live monitoring (closed circuit), in real time
-
Inspection of Public and Private Construction Projects
-
Projects
Project support in the field of maritime and river hydraulics, provided by a Civil Engineer from the I.S.T., specialising in maritime works
-
Inspections and Image Capture
Inspections and video footage capture above water using a drone and underwater using an ROV
-
Sediment and Sample Collection
-
Underwater Surveys