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EAGLE-OCT.-web
(Evaluation Assistant with a Goal of Low Emission from shipping - Ship Geometry and Ship Performance Estimation Program)

EAGLE-OCT.-web. is a program providing ship form and ship performance data from their main particulars and enables an assessment of their performance in actual seas using OCTARVIA-web and SALVIA-OCT..-web

Outline

EAGLE-OCT.-web. is a program providing ship form and ship performance data from their main particulars and enables an assessment of their performance in actual seas using OCTARVIA-web and SALVIA-OCT.-web. This program allows users who do not have detailed ship geometry and performance data to assess the performance of their ships in actual seas.


Interface

The EAGLE-OCT.-web., which is provided with interface shown below, is a web application for data input-output to and from EAGLE-OCT.-web. The output data can be used in SALVIA-OCT.-web. and OCTARVIA-index/prediction.

InputInterface

Output Interface (Ship geometry parameters)

Output Interface (Superstructure parameters)


EAGLE-OCT.-web. Output Data

(1) Ship Geometry Data

  • ・Two-dimensional geometry data (draft, half beam, and cross sectional area distribution in the longitudinal direction)
  • ・Waterplane shape and superstructure parameters
  • ・Prismatic coefficient, wetted surface area, bilge keel (length and width), and center of gravity (lengthwise and heightwise)
  • ・Height of transverse metacenter, natural roll period, and radius of gyration (pitch, roll, and yaw)
  • ・Rudder particulars

(2) Ship Performance Data

  • ・Propeller open water characteristics
  • ・Self-propulsion factors in still water
  • ・Parameters in load variation method
  • ・Specific Fuel consumption data
  • Please see the following references for validation of the output data.

    • 1) M. Tsujimoto, M. Kuroda, N. Sogihara, and A. Sakurada: Development of Empirical Formulae for Estimating Ship Performance, Papers of National Maritime Research Institute, Vol. 18, No. 3, pp. 91-106, 2018.
    • 2) N. Sogihara, M. Kuroda, A. Sakurada, S. Yokota and M. Tsujimoto: UNITAS: Tool for supporting evaluation of ship performance in actual seas, Papers of National Maritime Research Institute, Vol. 19, No. 1, pp. 101-122, 2019.

Example of Estimation

The following is an example of estimation of the form and performance of an ocean-going container ship by EAGLE-OCT.-web. (excerpt)

Draft Distribution in Longitudinal Direction

Draft Distribution in Longitudinal Direction

Propeller open water characteristics

Propeller open water characteristics

Draft Distribution in Longitudinal Direction

Half Beam Distribution in Longitudinal Direction

Propeller open water characteristics

Self-propulsion factors in still water

Propeller Open Water Characteristics

Propeller Open Water Characteristics

Half Beam Distribution in Longitudinal Direction

Half Beam Distribution in Longitudinal Direction


To use this application

This application is available in full version and limited version(free).

To use this application, you must apply for membership registration which includes the signing of a written license agreement with NMRI.

Please go to the Registration page to register.


Fees (tax excluded):

・112,500 JPY(Japan resident needs extra tax) half-yearly

・150,000 JPY(Japan resident needs extra tax) annually