Page 41: of Offshore Engineer Magazine (May/Jun 2023)

40 42

OFFSHORE WIND VESSELS © AdobeStock/David Maddock

WHAT ELSE CAN WE CONSIDER?

On top of the energy carrier/converter choice, there re- main several other tools for lowering emissions intensity available to owners to consider, depending on the size of vessel. These include: • Ship design and hydrodynamics: Hull-form, ship size, propulsion improving devices, pr opellers, rudders & material optimization, air lubrication, hull coating/cleaning and pr opeller cleaning.

• Energy assistance from wind or solar sources.

• Logistics and digitalization: Speed reduction, w eather routing, trim, draft, and ballast optimization, autopilot software, engine de-rating and vessel size.

• Waste heat and/or kinetic energy recovery.

• After treatment measures such as carbon capture and storage.

MAY/JUNE 2023 OFFSHORE ENGINEER 41