Services
At DDES, we provide comprehensive engineering and drafting solutions tailored to the Oil & Gas and Renewable Energy industries. Our services span the entire project lifecycle — from early feasibility studies and concept development through to detailed engineering, installation, operation, and decommissioning.
Every project we deliver is guided by three core principles: safety, practicality, and cost-efficiency. This ensures our solutions meet the highest technical standards while addressing the real-world challenges of offshore and onshore environments.
Oil & Gas / Wind
For Offshore Contractors (Oil & Gas / Wind)
Design & Drafting of Temporary Installation Aids
We engineer temporary structures and systems that optimize performance during demanding offshore operations:
- Rigging Arrangements for Heavy Lifts – engineered lift plans and rigging systems designed to reduce risk and downtime.
- Grillage & Seafastening – tailored transport and securing systems for safe and reliable offshore mobilization.
- Lifting Beams, Spreader Bars & Handling Tools – optimized for load efficiency and structural safety in line with global standards.
- Pull-in & Laydown Systems – solutions for subsea pipeline and cable installation, designed for efficiency and long-term reliability.
Complete Installation Drawing Packages
We prepare fully detailed documentation to guide safe and successful offshore installations:
- Pipeline Installation Procedures – layouts, tie-in methods, and step-by-step drawings.
- Subsea Power & Export Cables – pull-in designs, and deck layout drawings.
- Heavy Lift Operations – structural verification, rigging studies, and lift procedure drawings.
- Heavy Transport & Deck Layouts – optimized stowage plans ensuring safe and efficient logistics.
For Offshore Operators (Oil & Gas / Wind)
We support operators in maximizing asset value, whether by extending the life of existing infrastructure or developing new offshore fields.
Brownfield Works
Engineering solutions for enhancing and adapting existing offshore facilities:
- Host Modification Designs – adapting topsides and floating assets to accommodate new tie-ins or equipment.
- Tie-in Solutions – integration of new subsea wells and infrastructure into operational assets.
- Structural Upgrades – reinforcement and modifications to extend service life or increase operational capacity.
Greenfield Works
Comprehensive engineering support for new offshore field developments:
- Field Development Drawings – layouts and designs to support new exploration and production.
- Subsea Structure Concepts – development of foundations, manifolds, templates, and subsea modules.
- Installation Support – procedural drawings and engineering services to guide offshore construction, commissioning, and start-up.
Renewable Energy Sector
As the global energy transition accelerates, DDES is committed to supporting renewable energy projects with the same precision and reliability that define our oil & gas expertise. We help developers and contractors design, plan, and execute offshore renewable projects safely, efficiently, and sustainably.
Offshore Wind Farms
- Monopile & Jacket Installation Support – design of lifting tools, seafastening, and installation aids for offshore foundations.
- Substation & Transition Piece Design – drafting and engineering support for offshore substations and topside structures.
- Deck Layouts & Installation Packages – optimized for heavy lift and cable installation operations.
Subsea Cable Systems
- Export & Inter-Array Cable Engineering – route design, pull-in arrangements, and installation methodologies.
- Deck & Equipment Layouts – ensuring efficient and safe vessel operations.
- Protection & Stabilization Systems – concept design of supports, crossings, and cable protection measures.
Floating & Emerging Renewable Technologies
- Floating Wind Platforms – concept and structural design of floating substructures and mooring systems.
- Tidal & Wave Energy Systems – engineering and drafting support for innovative marine energy technologies.
- R&D and Prototyping Support – technical design assistance for early-stage renewable solutions.
By combining decades of offshore construction expertise with forward-looking innovation, we provide renewable energy clients with the technical foundation they need to deliver projects that are safe, sustainable, and future-ready.
Offshore & Marine Engineering
We design and engineer temporary installation aids, lifting equipment, and seafastening solutions that make complex offshore operations safe and efficient.
- Piling frames & rigging arrangements
- Grillage & seafastening
- Lifting beams & spreader bars
- Pull-in systems & subsea structures
Decomissioning
Project Design Packages
Comprehensive installation drawing packages for pipelines, subsea cables, heavy lifts, and transport operations.
Structural Engineering & Analysis
From detailed drafting to advanced finite element analysis (FEA), we deliver robust, optimized designs that stand up to the toughest conditions.
- Load case determination
- Strength & stability calculations
- Fatigue & connection design
- Deck layout & verification
Decommissioning Solutions
When offshore assets reach the end of their lifecycle, we develop safe, sustainable, and cost-efficient decommissioning strategies that minimize environmental impact.
Tender & Procurement Support
Our experience in offshore infrastructure and procurement processes gives clients a competitive advantage during bidding and execution.
