Decarbonisation, from hull to funnel.

SEMS is your turnkey supplier of energy and emissions systems for ships. From energy saving technologies to onboard carbon capture, we engineer the whole ship as one system, so it burns less fuel and emits less CO₂.

  • Simulation-driven design
  • Class approval routes
  • In-service verification
Beyond 20%
combined fuel saving
40+ years
combined team experience
Class
approved
Verified
in-service savings
The SEMS approach

Every change to a ship affects the rest of it. So we engineer them together.

A new propeller, a twisted rudder and a capture plant each change how the ship performs. Chosen separately, they can work against each other. Engineered together, the gains add up. We take responsibility for the whole ship, from hull to funnel.

01 · Assess

Baseline

Operating profile, vessel performance and emissions are modelled, with a staged route to lower CO₂.

02 · Model

Integrate

Energy saving technologies and capture plant are modelled together, so each is sized and tuned for the ship the other creates.

03 · Build

Deliver

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

04 · Verify

Prove

In-service monitoring verifies fuel saved and CO₂ captured, as one figure for compliance.

Energy & Emissions Systems

Burn less fuel. Capture what is left.

Our proprietary energy saving technologies are matched to the flow around your ship to recover lost energy and reduce drag. Onboard carbon capture takes emissions further, engineered as part of the same system.

Energy savingEmissions
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.
  • CFDHigh-fidelity simulation of the whole flow.
  • Offshore & windSupport vessels, platforms and floating wind.
  • Emission monitoring & complianceEEXI, CII and MRV reporting support.

Find out what your ship could save, and capture.

Send us a vessel particulars sheet and operating profile. We will come back with an honest first view on the fuel your hull is leaving in the water, and how much CO₂ onboard capture could take out on your route.