Classification agency ClassNK has introduced a new software called PrimeShip-GREEN/ProSTA to analyse and calculate a ship’s speed trial.

Results can be used to calculate the energy-efficiency design index (EEDI) in compliance with the latest International Maritime Organization (IMO) guidelines.

Go deeper with GlobalData

Go deeper with GlobalData

The gold standard of business intelligence.

Find out more

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

In its guidelines on survey and certification of the EEDI, the IMO has provided two methods to avoid the effects of external factors during sea trials and deliver a way to analyse and calculate a ship’s speed in calm sea conditions.

IMO’s assigned approaches include ISO 15016: 2002 and the International Towing Tank Conference (ITTC) Recommended Procedures.

"It helps ship designers calculate the vessel’s speed to meet the ISO 15016: 2015 standard and minimises the workload needed for EEDI calculation."

ISO and ITTC collaborated to create the new harmonised international standard after the IMO requested to eliminate this dual standard.

The new, harmonised international standard, ISO 15016: 2015, will be adopted at this month’s MEPC68 and is expected to apply to all sea trials from June.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

As part of this effort, ClassNK has developed the support tools such as PrimeShip-GREEN/ProSTA for shipyards, ship owners and the maritime industry to facilitate smooth adoption of the amended standard.

It helps ship designers calculate the vessel’s speed to meet the ISO 15016: 2015 standard and minimises the workload needed for EEDI calculation.

In February, ClassNK announced a joint research project to enhance safety standards for ultra-large container ships.

This project will be part of the ClassNK joint research and development (R&D) for industry programme, in collaboration with Japanese Welding Engineering Society (JWES), steel manufacturers, shipbuilders and neutral research institutes.

The joint programme is aimed at developing technical standards in order to clarify crack-arrest parameters for steel plates beyond the existing limit, for the safety of ultra-large container ships.

Ship Technology Excellence Awards - Nominations Closed

Nominations are now closed for the Ship Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
From automated chartering invoices to EU ETS and CII management, Ankeri Solutions’ maritime SaaS platform has earned three Ship Technology Excellence Awards for 2025. See how Ankeri is helping shipowners and charterers boost efficiency, cut emissions, and collaborate better across complex global fleets.

Discover the Impact