Subsea Products & Infield Structures
Nautilus Subsea provides engineered subsea structures tailored to each field, combining technical expertise with practical fabrication and installation experience to ensure full functionality throughout the entire product lifecycle.
Key Points
Portfolio
PLETs / PLEMs / SSIVs / Manifolds
Lifecycle
Concept to Fabrication
Design Focus
Installation & Vessel Efficiency
Key References
Johan Castberg / Troll / Snorre
Independent. Experienced. Subsea Engineering
Nautilus Subsea designs, engineers, and delivers a wide range of infield subsea structures and hardware developed to meet each client’s specific application and field requirements. Our approach combines technical expertise, practical fabrication solutions, and a deep understanding of offshore installation challenges to create reliable and cost-efficient subsea systems.
We support projects across the full field development lifecycle, from concept and detailed engineering through fabrication and delivery. Every structure is designed with a strong emphasis on structural integrity, operational functionality, and manufacturability. By integrating engineering precision with fabrication feasibility, we ensure that our solutions are not only technically sound, but also practical and efficient to build and install.
Our portfolio includes
- inline tees and wyes,
- hot tap tees,
- PLETs and PLEMs,
- riser bases,
- pig launchers and receivers (PLRs),
- rigid spools, protection structures,
- SSIVs, and manifolds.
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Safety & Efficiency
Whether supporting small infield tie-backs or larger export systems, our products are engineered to perform reliably in demanding offshore environments.
Safety, efficiency, and quality are fundamental to everything we deliver. We are committed to providing subsea structures that reduce installation complexity, optimize vessel time, and ensure long-term performance. Through close collaboration with our clients, we tailor each solution to align with project-specific technical, operational, and commercial objectives.
We have been involved in all project phases — from concept development and FEED studies to detailed engineering, EPC support, fabrication follow-up, and offshore supervision. This end-to-end involvement gives us a comprehensive understanding of technical interfaces, installation constraints, fabrication challenges, and operational requirements. It ensures that our designs are not only technically optimized, but also practical to manufacture and efficient to install.
At Nautilus Subsea, we combine innovation with proven engineering principles to deliver dependable subsea infrastructure — safely, efficiently, and on schedule.
Some references:
- Polarled
- Troll phase 3
- Tommeliten
- Johan Castberg
- Snorre
- Europipe Phase 2 (Baltic Pipe)
