EEDI Technical File Overview
Q1: What is the EEDI technical file?
A1: The EEDI technical file is a booklet that contains all the necessary parameters related to the engines fitted on board, required for calculating the EEDI value of a ship.
Q2: Which ships are required to have an EEDI technical file?
A2: According to MARPOL Annex VI, each new ship for which chapter 4 is applicable needs to be provided with an EEDI technical file.
Creation and Revision Process
Q3: When is the EEDI technical file first created?
A3: The EEDI technical file is first created during the design stage of the vessel.
Q4: What is done during the design stage to compute the EEDI?
A4: During the design stage, a model test is conducted, and the EEDI is computed based on the results of this test.
Q5: Who verifies the initial EEDI computation and technical file?
A5: A verifier, usually a classification society acting on behalf of the flag state, witnesses the model test, verifies the EEDI computation, and reviews the initial EEDI technical file.
Q6: When and why might the EEDI technical file be revised?
A6: The EEDI technical file may be revised during actual sea trials, where actual parameters are measured. If these measurements differ from the initial calculations, the file is revised accordingly.
Q7: How is the attained EEDI value calculated?
A7: The attained EEDI value is calculated based on the revised EEDI technical file, which incorporates data from actual sea trials.
Key Points to Remember:
- The EEDI technical file contains crucial engine parameters for EEDI calculation.
- It’s mandatory for new ships under MARPOL Annex VI, Chapter 4.
- The file is created during the design stage and may be revised after sea trials.
- A verifier (usually a classification society) oversees the process.
- The attained EEDI is based on the final, potentially revised, technical file.
