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IMOS - Fuel Zones

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You must have the Fuel Zones Module Right selected, under Ports and Areas in the Data Center.

The Fuel Zones form is used to specify estimated/projected low sulfur consumption for different ECA Fuel Zones. Consumption is specified in sets, and can accommodate different ECA regulations, different Vessel Types, and other factors. You can create multiple Fuel Zone Sets, including a Global Default Set, and apply them to specific vesselsVessel TypesEstimates, and voyages.

On the Data Center menu 

, under Ports and Areas, click Fuel Zones.

When configuration flag CFGEnableScrubberType is enabled, high-sulfur fuels cannot be added to the Non-Scrubber tab of the Fuel Zones form. If the drop-down menu only allows the (cons rate only) to be entered, the fuel is labeled as a high-sulfur fuel on the Fuel/Lube Types form.

Creating a Fuel Zone Set

See IMOS - Creating a Fuel Zone Set.

ECA Routing

To set up ECA routing, do any of the following:

  • On the Estimate (column or details) or Voyage Manager, set ECA Routing:
    • Default: Uses the vessel's default routing preferences specified on the Routes tab in the Vessel form.

    • Disabled: Uses the most direct route.

    • Enabled: Reroutes around all ECA zones.

  • On the Estimate, Voyage, or Distances map, select Minimize ECA Routing.
  • In Distances Map Settings, there is a Minimize ECA check box. When selected, routes will be calculated to minimize travel through ECA Zones.

If a port is located within a Fuel Zone, its name appears on the Properties panel.

  • A port is assigned to the smallest Fuel Zone within which it is located. For example, HUENEME is assigned to USA 25NM zone, but it is also located in US 200NM:

  • To override the low sulfur status, select the Use High Sulfur Fuel check box. Any future in-port consumption at that port uses high sulfur fuel.

    • To specify a port as a low sulfur area, select the Low Sulfur ECA check box.

    • You can also specify an Emission Control Area as a low sulfur area, automatically setting the area and all ports in it to low sulfur. To confirm that you have the latest version of Distances, make sure that ECA Fuel Zone ports are in your Port List, and confirm that the Low Sulfur ECA check box is selected in all of them.

      For other ports, the Fuel Zone field contains None.

Low Sulfur Fuel Use: Port Selections & Fuel Grades Consumed

Port Selections

Fuel Grades Consumed in LS Port

  • Not Low Sulfur

G and H

  • Low Sulfur

  • Without Configuration flags

All L grades

  • Low Sulfur

  • Without Allow <1% IFO

  • With CFGLSPortConsumptionDefaultGrades

L grades specified in CFGLSPortConsumptionDefaultGrades

  • Low Sulfur

  • With Allow <1% IFO

  • With CFGLSPortConsumptionDefaultGrades

  • Without CFGLSPortConsumptionLSFOGrades

L grades specified in CFGLSPortConsumptionDefaultGrades

  • Low Sulfur

  • With Allow <1% IFO

  • With CFGLSPortConsumptionLSFOGrades

L grades specified in CFGLSPortConsumptionLSFOGrades

  • Configuration flag with grades not on the vessel

No L grades

ECA Fuel Zones

  • ECA BOHAI SEA - BOHAI SEA is a zone that is contained under the China ECA zone for propulsion.

  • ECA-CHINA: When using this fuel zone, set YANGTZE RIVER DELTA, and YANGTZE RIVER DELTA 10OCT18 as inactive. ECA-CHINA incorporates these zones together so the others are no longer needed. When keeping them all activated will cause duplicated passing points in the itinerary.
  • HAWAII 200NM
  • USA 200NM
  • USA 24NM
  • WORLDWIDE: This zone is used to set the Fuel Types to be consumed in ports that are not located in any of these Fuel Zones but have the Low Sulfur ECA check box selected. This includes any historic Estimates created without Fuel Zone information. It should include only Fuel Types that were being used for low sulfur consumption before configuring Fuel Zones (and no cons rate only); otherwise, the consumption rates and types will change on Estimates/voyages created before Fuel Zones were enabled.

Related Configuration Flags



Enable Scrubber Type

When enabled, a scrubber drop-down menu appears on the Port, Voyage Bunkers, Bunker Planning, and Vessel forms accessed through an Estimate. On the Port and Vessel forms, the drop-down menu reflects scrubber values allowed at the port and equipped in the vessel. On the Voyage Estimate and Voyage, it reflects the scrubber type used for bunker calculations. On the Vessel form, the “Use Scrubbers” check box is replaced with the new “Scrubber Type” drop-down menu. The Fuel Zones form has two tabs to support “Scrubber” and “Non-Scrubber” configurations. These new options facilitate bunker calculations to use the IMO 2020 regulations.

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