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OCTARVIA-API

OCTARVIA-API is the API service, which enables you to use the program without a Web browser. The API service is developed based on the Web application OCTARVIA-web. OCTARVIA-API estimates the life cycle fuel consumption of a ship’s main engine under conditions provided by the standard operating model and enables the assessment of ship performance in actual sea conditions.

Outline

OCTARVIA-API is the API service, which enables you to use the program without a Web browser. The API service is developed based on the Web application OCTARVIA-web. OCTARVIA-API estimates the life cycle fuel consumption of a ship’s main engine under conditions provided by the standard operating model and enables the assessment of ship performance in actual sea conditions.

The analysis results can be utilized in connection with each company’s business systems and data infrastructure. This also facilitates integration with existing systems and compatibility with each company’s specific data formats.

Click here to view our service fees.
The main inputs and outputs are as follows.

Input:

  • ・Geometry Data (Principal particulars data / Cross‑sectional shape parameters / Water plane shape)
  • ・Rudder Data (Position of the rudder shaft / Movable part area / Rudder height / Aspect ratio)
  • ・Hull Performance Data (Ship resistance coefficients in still water / Self‑propulsion factors in still water)
  • ・Propeller Data (Principal particulars of propeller / Propeller characteristics)
  • ・Main Engine Operating Conditions (Specific fuel consumption / Torque limit parameters / Main engine operating conditions)
  • ・Weather and Sea Conditions (Wind speed / Wind direction / Significant wave height / Mean wave period / Primary wave direction (wind waves and swells) / Directional wave spectrum)
  • ・Route Data Parameters for Life Cycle Evaluation (Aging deterioration parameters / Biological fouling parameters / Cleaning intervals / Evaluation period)

Output:

  • ・Operational Simulation Results in Actual Seas (Ship speed / Main engine power / Fuel consumption / Main engine revolution / Variance value of motion / GHG emissions, etc.)
  • ・Power Curves under Evaluated Weather and Sea Conditions
  • ・Estimation Results of External Forces (Added resistance in waves / Wind pressure / Hydrodynamic forces in oblique motion / Rudder force / Ship motions)
  • ・Life‑Cycle Fuel Consumption
  • ・Life‑Cycle Parameters (Total transport distance / Total amount of cargo / GHG emissions)
After the registration, you can download sample data, sample script, and manuals from the download page.
Sample script format:HTML、command
Input/output format:JSON and other text data.

To use this application

This application requires a paid subscription. To use this application, you must apply for membership registration which includes the signing of a written license agreement with NMRI and the Terms of Use for Programs of the OCTARVIA Project. Please go to the Registration page to register.

Fees

Fixed fee 660,000 JPY annually
Number of lines included 500 times/year
Overage charge*1 902 JPY / count (for a year)

*1Counts do not include times when calculations could not be completed due to input errors or other issues.

The contract period is 12 months from the date of signing.

If you wish to perform a connection test before signing the contract, please contact by "Contact Us" page in NMRI Cloud. We can provide a connection verification (free of charge) for two days.

Billing Timing: The fixed fee is charged at the time of a contract. The overage charges will be charged at the end of the contract period.

The fee is calculated based on JST.