01✦
Azimuth Thruster Overhaul
Disassembly, dimensional inspection, component reconditioning, assembly and functional testing.
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MARINE PROPULSION ENGINEERING
ENGINEERING
THAT KEEPS
OPERATIONS
MOVING.
Engineering, overhaul, THRUSTER SWAP and technical services for marine propulsion systems and critical equipment.
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0subsea removal and installation operations
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0thruster overhauls
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0 Lof filtered oil
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0countries served
SUBSEA
OPERATIONS
TWAS REPAIR →
INTEGRATED PORTFOLIO
OUR SERVICES
Complete engineering, maintenance and technical support solutions for propulsion systems and critical equipment.
0102
✦
THRUSTER SWAP
Subsea removal and installation of azimuth thrusters, with planning, rigging, diving support and controlled execution.
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03✦ABS RECOGNIZED SERVICE SUPPLIERLEARN MORE →
Condition Monitoring — CBM
Vibration analysis, Shock Pulse Method and diagnostics for critical equipment, under ABS recognition for Condition Monitoring.
ABS RECOGNIZED SERVICE SUPPLIER
04✦
Electric Motor Overhaul and DE/NDE Bearing Replacement
Complete overhaul or partial maintenance of electric motors, including inspection and replacement of drive-end and non-drive-end bearings.
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05✦
Valve Maintenance and Testing
Replacement, overhaul, maintenance and testing of marine and industrial gate, globe, check and butterfly valves, including hull and HiPAP system applications up to Ø500 mm. Testing in accordance with API 598 and class requirements.
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06✦
Laser Shaft and Coupling Alignment
Alignment measurement and correction to reduce vibration and wear, protect bearings and improve equipment availability.
LEARN MORE →07
✦
SAOS² System for Azimuth Thrusters
Method for evaluating L-Drive thruster alignment at 0°, 90°, 180° and 270°. Analysis of relative centers and the alignment orbit identifies deviations associated with gear coupling failures.
SCIENTIFIC PUBLICATION · ENGINEERING FAILURE ANALYSISREAD THE PUBLICATION ↗
08✦
Technical Assistance
Mobilization and specialized technical support onboard, offshore and onshore.
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09✦
Field Engineering, Planning and Rigging
Execution procedures, rigging plans, special tools, risk analysis and technical documentation.
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10✦
CBM Systems and Continuous Condition Monitoring
Online vibration and Shock Pulse Method monitoring to detect condition changes before they develop into functional failures.
LEARN MORE →11
✦
Propeller Repair, Dimensional Restoration and Polishing
Inspection, dimensional restoration, repair, polishing and finishing to restore propeller profile and performance.
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12✦
Oil Filtration, Vacuum Dehydration and Cleanliness Control
Filtration, vacuum dehydration and cleanliness control in accordance with ISO 4406 and NAS 1638.
LEARN MORE →REPRESENTATION AND AUTHORIZED SUPPORT
GLOBAL TECHNOLOGY.
LOCAL EXECUTION.
Technical relationships that expand TWAS capabilities in propulsion, sealing and condition monitoring.
01
Recognized as the largest seal manufacturer for the marine market, supplying sealing systems and bearings for propulsion shaft lines in oil- and water-lubricated applications.
EXPLORE THE TECHNOLOGY ↗
02
Azimuth propulsion systems developed for demanding marine applications, focused on reliability, efficiency, operational availability and low lifecycle cost.
EXPLORE THE TECHNOLOGY ↗
03
U.S. manufacturer of heavy-duty marine propulsion systems, including azimuth, retractable and tunnel thrusters for commercial, offshore and military applications.
EXPLORE THE TECHNOLOGY ↗
04
Swedish technology for vibration analysis, Shock Pulse Method and continuous monitoring, enabling condition changes to be detected and interventions planned before functional failure.
EXPLORE THE TECHNOLOGY ↗PROJECTS AND MILESTONES
OPERATIONS THAT
MADE HISTORY.
Projects that demonstrate technical capability, industrial scale and operational control in critical interventions.
OPERATIONAL MILESTONE
First worldwide record
Subsea THRUSTER SWAP 80 nautical miles offshoreRemoval and installation performed in open sea, without dry-docking the unit, in an area with an approximate water depth of 2,500 metres. A pioneering operation planned and executed by TWAS.
- Open-sea offshore execution
- Subsea intervention without dry-docking
- Rigging and subsea hydraulic tooling
SUBSEA ENGINEERING
Subsea Azimuth Gear seal replacement using a cofferdam, without dry-docking the vessel.
THRUSTER MANUFACTURERPleuger (Flowserve)
- Engineering and execution method developed by TWAS
- Cofferdam installation and leak testing
- Seal replacement and controlled device removal
MULTI-BRAND CAPACITY AT SCALE
Operational milestone: 17 thrusters under simultaneous overhaul
Four projects delivered in parallel for four offshore unitsDrilling rigs and offshore platforms supported through coordinated disassembly, inspection, reconditioning, assembly and testing work fronts.
- 4 simultaneous projects
- 4 drilling rigs and offshore platforms supported
- 17 thrusters at different overhaul stages
MULTI-BRAND EXPERIENCERolls-Royce · Wärtsilä · Pleuger (Flowserve) · Kawasaki
CASE 04
OPERATIONAL LOGISTICS
Handling eight azimuth thrusters.
- Handling planning
- Operational coordination and technical control
- Safety throughout every stage
PRECISION IN EVERY DELIVERY
TEAM AND SAFETY
TRACK RECORD SINCE 2019RESULTS BY THE NUMBERS
204
SUBSEA REMOVAL AND INSTALLATION OPERATIONS.
Consolidated operation count, without duplication by solution type.
0operational accidents
98%first-time-right delivery
24/7technical support
NEWS AND EVENTS
KNOWLEDGE
IN ACTION.
Projects, technical development and HSE initiatives that strengthen knowledge, people and operational performance.
RESEARCH AND DEVELOPMENT
Technical Development System for Predictive Engineering
Training, standardization, indicators and technical evolution to turn condition data into safer, more predictable maintenance decisions.
TECHNICAL PRESENTATION
TWAS Delivers Technical Presentations at Foresea’s Drilling Academy
Invited by Foresea, TWAS participated in both editions of the 2025 Drilling Academy Workshop. The programme brought together TWAS specialist engineers, PhD-level professionals, senior vibration analysis and propulsion specialists, as well as members of Foresea’s technical team. Presentations and technical discussions covered marine propulsion fundamentals, preventive and corrective maintenance, overhaul, thruster removal and installation, and predictive maintenance.
EDUCATION AND TECHNOLOGY
TWAS supports ITATUG in achieving first place at DUNA
TWAS Repair supports ITATUG Nautidesign, a CEFET/RJ extension project formed by students from Mechanical Engineering, Production Engineering and the Mechanical Technician programme. At DUNA 2026, the team designed, built and operated a scale tugboat, achieving first place in the Race event. The result strengthens the partnership between industry and academia and brings academic knowledge closer to real engineering challenges.
HSE AND DEVELOPMENT
SIPAT 2026 — safety and care for people
From April 27 to 30, TWAS brought employees together for activities focused on ergonomics, cardiovascular health and mental well-being, reinforcing its commitment to prevention, quality and environmental responsibility.
OPERATIONAL CAPACITY
PROVEN EXPERIENCE.
DOCUMENTED EXECUTION.
From planning through return to operation, TWAS combines engineering, skilled personnel, tooling, logistics and technical control under a single management structure.
EXPLORE OUR EXPERIENCE →01
Engineering and planning
Execution methods, risk analysis and mobilization.
02
Specialized execution
Experienced personnel for critical interventions.
03
Evidence and traceability
Records, tests and documentation linked to each service.
IDENTITY AND MANAGEMENT
PURPOSE
IN PRACTICE.
The way we work turns commitment into decisions, processes and consistent results for customers, teams and partners.
Mission
Provide maintenance services with excellence, ensuring customer satisfaction, punctuality, quality and safety at every stage through efficient, reliable and sustainable solutions.
Vision
Be a leading reference in the Americas for naval propulsion maintenance, recognized for excellence, innovation and commitment to quality, health, safety and the environment.
Values
Excellence, integrity, responsibility, safety, teamwork, innovation and respect for people and the environment.
INTEGRATED MANAGEMENT SYSTEM POLICY (IMS)
INTEGRATED MANAGEMENT SYSTEM POLICY (IMS)
TWAS Repair, specialized in technical assistance, maintenance and mechanical repair of naval and industrial equipment, establishes its Integrated Management System Policy with a commitment to ensuring excellence in service delivery, integrating quality, safety and environmental responsibility across all operations.
Customer focus
Fully meet applicable requirements and continuously monitor services to ensure customer satisfaction.
Quality, efficiency and operational reliability
Deliver to high technical standards using procedures, standards and best practices, ensuring consistency, competence, confidentiality and compliance.
Health, Safety and Environment (HSE)
Act preventively by promoting a safe and healthy workplace, reducing occupational risks and environmental impacts, and using natural resources responsibly.
Continuous improvement
Continuously improve processes and Integrated Management System performance in compliance with ISO 9001, ISO 14001 and ISO 45001.
TWAS Repair reaffirms its commitment to legal compliance, employee engagement and the continuous pursuit of operational excellence, strengthening sustainable relationships with clients and partners.
HSE AND QUALITY
SAFETY IS A VALUE.
CONTROL IS A PRACTICE.
Planning, risk analysis, communication and document control guide every stage of our operations.
01
Plan
Identify interfaces, risks and barriers.
02
Prepare
Align personnel, tools and documentation.
03
Control
Monitor conditions and operating limits.
04
Verify
Record evidence and complete the close-out.
CERTIFICATIONS AND RECOGNITION
INTERNATIONAL
QUALITY STANDARD.
TWAS combines certified management systems with technical recognition for critical marine and offshore services.
TECHNICAL RECOGNITION
ABS Recognized Service Supplier
TWAS is officially recognized by the American Bureau of Shipping for Condition Monitoring services. Its results may support ABS surveyors in classification and statutory decisions.
First company in Brazil to obtain ABS recognition for this scope.CONDITION MONITORINGVALID UNTIL 04 FEB 2029
INTEGRATED MANAGEMENT SYSTEM
DNV Certification
Quality, environmental management, occupational health and safety integrated into TWAS processes and operations.
ISO 9001Quality Management
ISO 14001Environmental Management
ISO 45001Occupational Health and Safety
ETHICS AND COMPLIANCE
TRANSPARENCY
IN EVERY RELATIONSHIP.
TWAS conducts its activities with integrity, respect for the law and accountability. Read our Code of Ethics and Conduct, review the Anti-Corruption Policy or contact Compliance directly.
01 · OFFICIAL DOCUMENTCode of Ethics
and Conduct
Policy
and Conduct
Full version available for consultation and download.
DOWNLOAD PDF ↓02 · OFFICIAL DOCUMENTAnti-CorruptionPolicy
Guidelines for preventing, controlling and combating corrupt practices.
DOWNLOAD PDF ↓03 · DIRECT CHANNELComplianceEthics and compliance matters.
compliance@twasrepair.com ↗The Code establishes that retaliation will not be tolerated against anyone who, in good faith, reports illegal conduct or conduct contrary to its guidelines.
READY TO TALK?
BRING YOUR NEXT
CHALLENGE TO TWAS.
Send us the scope, operation location and required schedule. Our team will contact you to align the technical information.
REQUEST A QUOTE →BRAZIL | OPERATIONAL BASE
São Gonçalo, RJ
Travessa Frederico Marques, 84 · Boa Vista · São Gonçalo, Rio de Janeiro · 24466-180
OPEN IN GOOGLE MAPS ↗PARAGUAY | COMMERCIAL
Limpio, Paraguai
Ruta General Aquino c/ San Salvador · Limpio · Paraguay
PARAGUAY SALES+595 984 390270Proposals, quotations and new projects.
+55 (21) 98802-0417 · 24/7 Supportcomercial@twasrepair.com ↗Mobilization and operational support.
operacoes@twasrepair.com ↗Safety, quality and documentation.
qhse@twasrepair.com ↗Suppliers, purchasing and registration.
suprimentos@twasrepair.com ↗Billing and tax documents.
financeiro@twasrepair.com ↗Resumes and workforce matters.
rh@twasrepair.com ↗