STA-2

A new chapter for speed/power trials

Initiative

STA-2 is the continuation of STA joint industry project. The proposed JIP aims to further improve the current standard for speed/power trials. New correction methods will be evaluated, where needed newly developed, and validated. Furthermore, the conduct method for trials will be updated.

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Background

In 2006, leading ship owners, yards, class societies and MARIN developed a new industry standard for speed/power trials within the Sea Trials Analysis (STA) JIP. This standard was drafted with the goal to create a practical, accurate, and transparent standard. In 2012 the ITTC adopted the STA standard, soon followed by ISO15016 in 2015. IMO declared the ITTC/ISO15016:2015 standard as the preferred standard for the determination of ship speed for the Energy Efficiency Design Index (EEDI).

objective

Although the developed standard was a stark improvement over the previously existing methods, after many years of service there is room for improvement. This project seeks to update the current standard to the state-of-the-art.

Approach

The focus will be both on the conduct and analysis aspects of a speed/power trial, as well as improvements for in-service performance evaluation. The project will investigate existing and proposed correction methods for the effects of wind, wave and currents. The current test protocol for speed/power trials will be updated and a new protocol for in-service testing will be developed. Validation campaigns will be conducted to verify new correction methods and test protocols and to support adaptation.

Contact

Gijs Struijk

senior project manager

Impact

The project seeks have the results adapted in new standards and recommended practices from ITTC, IMO and ISO. The project conclusions, including validation results, and the support thereof from a wide base of participants will expedite the uptake.

Open for participants

The STA 2 JIP will kick off on April 8 during BlueWeek 2025 at MARIN. Stakeholders from the maritime industry, such as ship owners, shipyards, class societies and research institutes, are invited to join. For more information, please see the leaflet and project proposal below or contact us.

Download

Leaflet STA-2 JIP (PDF)

STA-2 JIP Proposal (PDF)