Measurable savings for the vessels that move the world’s cargo.

SEMS is your turnkey partner across your vessel’s needs. From custom propulsion to energy saving devices and onboard carbon capture, we engineer every technology as one integrated system.

  • Simulation-driven design
  • Class approval routes
  • In-service verification
Beyond 20%
combined fuel saving
3.2×
t CO₂ avoided per t fuel
Class
approved
Verified
in-service savings
The SEMS approach

One technology saves fuel. Combined technologies save far more.

The largest gains come from evaluating the combined impact of energy saving and emission reduction technologies working together, not from any single one in isolation. We take responsibility for the whole ship, from bow to stern.

01 · Assess

Baseline

Operating profile, vessel performance and emissions are estimated and modelled.

02 · Model

Integrate

Candidate technologies are simulated together, not in isolation, to find the best combination for your vessel.

03 · Build

Deliver

Turnkey supply and installation using established class-approval and manufacturing routes.

04 · Verify

Prove

In-service monitoring confirms the fuel and emissions savings achieved.

We recover energy others have missed.

SEMS is led by PhD experts in propulsion, energy saving technologies and naval architecture. The depth of that experience is how we find savings in difficult places.

CFD visualisation of the flow around a twin-screw stern, with pressure distribution mapped over the rudders
CFD visualisation of propeller, bracket and rudder interaction
Energy Saving Technologies

Four proprietary technologies, matched to the flow around your ship.

Every hull wakes differently. We assess the inflow, then select and tune our proprietary technologies, individually or in combination, to recover lost energy and reduce drag, so your vessel burns less fuel on the same route and loading condition.

SEMS OptiBlade™
Proprietary technology

SEMS OptiBlade™

Blade geometry designed around your actual wake field and operating profile, with pitch, camber, skew and area tuned for efficiency while reducing cavitation and radiated noise.

Typical gain4%
MechanismOpen-water efficiency
FitRetrofit / newbuild
Savings estimator

How much more could your vessel be saving?

A 30-second screening estimate. Pick a vessel, choose the technologies you are considering, and see the indicative range, then send it to us for an accurate CFD assessment.

Services

The engineering behind SEMS.

As a turnkey supplier, SEMS draws on these disciplines on every project. Each one is also available on its own: bring us in for a single study or analysis, or let the work carry through to supply and installation, with one partner responsible from start to finish.

  • Naval architectureHull form, stability and arrangement studies.
  • Marine propulsionPropellers and appendages tuned to your profile.
  • Onboard carbon capture systemsFeasibility, integration and supply of capture plant.
  • Marine hydrodynamicsResistance, seakeeping and manoeuvring studies.
  • CFDHigh-fidelity simulation of the whole flow.
  • Offshore & windSupport vessels, platforms and floating wind.
  • AI & digital twin solutionsPerformance models that evidence the saving.
  • Emission monitoring & complianceEEXI, CII and MRV reporting support.

Find out what your hull is leaving in the water.

Send us a vessel particulars sheet and operating profile. We will come back with an honest first view on whether a retrofit pays for itself on your route.