• Easily used by ships maintenance staff right out of the box

  • Instant indication of condition for motor bearings, gears, compressors, slewing rings, hoists, winches...

  • Plan maintenance and have the spares available on time. Minimise off-hire and demurrage.
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Bunker & Marine Fuel Testing

The term “Bunkers” refers to either the fuel oil used by ocean going ships or the tanks they are stored in.  It is derived from an historic reference to coal bunkers used in the days of steam and sail.  The great majority of the bunker fuels used by the world’s merchant fleet are residual fuel oils. This is also true for the vast majority of large diesel engines operated on land. By definition, residual fuel oils are the products remaining from the refinery processes after all the distillate or lighter fractions have been removed.

Bunker sampler slice


Bunker fuel is delivered by pipeline, boat or barge. One common theme is that the world of commercial marine fuel supply is totally separate from the world of recreational marine fuels. Shipping has a higher volume and low-cost incentive to arrange deals with refiners to produce tailored marine fuels that are most cost effective for their engines. They use fuels that involve less refining (leaving the sulphur in the fuel), and therefore lower cost than other fuels.

For ocean going ships and to a large extent, land based users also, the type of fuel depends on four things:

  • Engine design and fuel system used
  • Cost of the fuel
  • Availability in the bunker port
  • Sulphur content (where restricted for operation in Emissions Control areas)

The grades are summarised in ISO 8217 (2010) and the usage generally restricted within the requirements of IMO Marpol Annex VI, Regulation 14.


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