31 successfully completed fuel trials of total 309 days attendance onboard various type of vessels – oil and chemical tankers, dry cargo, container and gas carriers. Extensive engineering expertise is delivered by our multi-disciplinary team that provides Marine and Engineering Consultancy and Engineering Services globally.

Capital Marine provided marine engineering consultancy on testing the use of biofuel. The biofuel significantly improves the environmental footprint compared with conventional marine fuel. Biofuels can be blended with conventional fuels without the need for major technical modifications to the engines. Aiming to reduce emissions from vessels, CMS Engineers carried out a large-scale biofuel pilot where the possibility of using biofuels on vessels was examined. Our engineers tested a “second-generation” biofuel made from waste products such as cooking oil.  The ultra low-sulphur fuel easily complies with current ECA regulations, it is also ISCC certified. The emission measurements during fuel trials indicated, that the biofuel is an effective and affordable method of reducing CO2 emissions.


  • OCIMF SIRE inspectors
  • Class 1 Motor Chief Engineers
  • DCE’s Oil & Chemical
  • ISM Auditors
  • Incident Investigators & Root Cause Analysis
  • Technical Superintendents



  • Inspect the condition of the main engine cylinders to ensure no damage has been caused by any of the test fuels (2-stroke engines only)
  • Check the performance records of load tests of the main and auxiliary engines using the test fuels compared to sea trial and shop trial reports
  • Thoroughly inspect the fuel systems before, during and after the trials to watch for any signs of deterioration and to assist the crew identifying any faults
  • Monitor the performance especially of the filters and purifiers and maintain records to evidence the performance
  • Verify the good segregation of test fuels from the existing bunkers including at the storage tanks and in bunkering lines
  • Take cylinder oil scrape down samples for testing at Shell Laboratories for assessment of liner wear (2-stroke engines only)
  • Read through the engine room records (bunker analysis, oil record book, etc) to collect evidence of efficient fuel handling
  • Maintain a logbook of engine room readings to make further conclusions of the result of the trial
  • Witness the bunker loading (where possible) and record any lack of best practice
  • Attend the engine room most especially during the fuel changeovers to describe the process and whether any problems occurred
  • Guide the crew in the handling of the trials fuel and advise of the potential issues if they should not follow these.

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