Hydraulic Engineering
Design of bespoke hydraulic solutions for marine, offshore and subsea applications, ensuring function and safety, delivered as fixed-scope work packs.
Bespoke hydraulic solutions
Flexible, bespoke hydraulic solutions fit for your purpose, without bespoke equipment timelines. From a single manifold to a complete offshore system, we design around your application, your constraints and your programme.
What we deliver
Hydraulic design for marine, offshore and subsea equipment, from first schematic to manufacturing drawings.

Schematic design
Hydraulic power units and offshore systems, from simple circuits to complex multi-function systems.
Manifold design
Bespoke manifolds with cartridge and top-mounted valves, designed for compact, leak-free installation.
Subsea hydraulics
Compensated enclosures with electro-hydraulic interfaces, fit for your subsea application.
Piping design
Hydraulic pipe sizing and routing for formed and welded pipework, complete with manufacturing drawings.
Focussed on delivery
Subco delivers high quality engineering work, on demand. We help companies deliver critical packages of work—without the delays, overhead, or commitment of hiring. Whether it’s a capacity or capability gap, we provide defined, fixed price solutions that keep projects moving.
Discover our platform
How we deliver
- 1
Fixed-price work packs
Scoped hydraulic packages with schematics, models, drawings and calculations, ready for stakeholder review.
- 2
Safety built in
Function and safety designed in from the schematic stage, with transparent assumptions and exclusions.
- 3
Practical designs
Buildable manifolds and pipework designed around offshore and subsea access, space and maintenance constraints.
- 4
ISO aligned processes
ISO 9001 quality and ISO 27001 information security; our client portal provides full visibility from scope to delivery.
- 5
Speed without shortcuts
Rapid design, peer review and sign-off, so projects keep moving without waiting on bespoke equipment timelines.
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Services by industry
Discover more flexible, fixed-price engineering support in your industry.
Frequently asked questions
What hydraulic engineering services does Subco provide?
We design bespoke hydraulic systems for marine, offshore and subsea applications: system schematics for hydraulic power units and offshore systems, bespoke manifolds with cartridge and top-mounted valves, compensated subsea enclosures with electro-hydraulic interfaces, and hydraulic pipe sizing and routing with manufacturing drawings.
Do you work on a fixed-price basis?
Yes. Every hydraulic package is scoped up front and delivered as a fixed-price work pack, so you know the deliverables, cost and programme before work starts.
What deliverables do I receive?
Typical deliverables include hydraulic schematics, 3D manifold models and drawings, pipe sizing calculations, pipework routing and manufacturing drawings, and the supporting design documentation, scoped to what your project needs.
Why use a bespoke hydraulic manifold?
A bespoke manifold replaces a network of individual valves, hoses and fittings with a single machined block. It reduces leak points, saves space and weight, and simplifies installation and maintenance, which matters most on vessels, offshore structures and subsea equipment.
Where can I learn the basics of hydraulic systems?
Speak to our experts
We'll help you define the problem, assess your needs, and connect you with the right engineering expertise — giving you clarity and confidence to move ahead.
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