Vessel detail
The vessel page is where compliance teams spend most of their time. It shows everything one vessel did in one year, across all five regulations.
Vessel detail header — name, IMO, type, fleet, year selector.
What’s on the page
Summary cards
Four cards across the top: Voyages (count + total distance), Sea Days (+ port days), Total CO₂, Total Fuel. Each card is one number plus a sub-figure for context.
CII performance
CII gauge with rating bands and a side-by-side comparison of database vs. reefer-corrected CII.
A radial gauge plots Attained CII against the required line, with A/B/C/D/E zones drawn in the background. Next to it, a comparison box shows two CII values:
- Database CII — what’s reported in the consumption logs
- Corrected CII — with reefer container CO₂ stripped out per MEPC.355(78)
A link opens the MEPC.355(78) PDF in an in-app slide-out panel for reference.
EEOI
EEOI by TEU and by weight, with supporting transport-work metrics.
Two EEOI numbers, calculated automatically based on ship type:
- EEOI by TEU — gCO₂ / TEU-NM (for container ships)
- EEOI by Weight — gCO₂ / tonne-NM (for bulkers and general cargo)
Plus the underlying transport work, total CO₂, total distance, and average cargo per voyage.
Fuel breakdown
Fuel consumed in the year, hierarchical by fuel category.
Tonnes by fuel type, displayed hierarchically:
- HFO (Total) = VLSFO + HFO LLS
- MDO / MGO
- LNG, Methanol, Biofuel blends, etc.
CII rolling chart
12-month rolling CII chart with required-CII step lines per year and brush-to-zoom.
Daily Attained CII plotted over a multi-year window (2023 → current+1 year by default), with the year’s Required CII as a stepped baseline. Rating bands are drawn as background colours. A brush at the bottom lets you zoom into any date range.
Voyages table — expandable
Voyages list, expandable row showing leg-by-leg ETS coverage.
One row per voyage with route, dates, total CO₂, distance, average CII, ETS classification, and ETS cost. Click any row to expand into a sub-table of legs:
- Leg # and route (port → port)
- Sea CO₂, sea-covered (with coverage %), EU port CO₂, total covered
- ETS coverage factor applied per leg
This is the most detailed view of how the EU ETS bill is built up for each vessel.
What you can do here
- See exactly which voyage and which leg generated each tonne of covered CO₂
- Compare attained CII trends against the required threshold over time
- Verify that reefer correction has been applied correctly
- Pick a year and see the year-end picture, or use YTD for live monitoring
- Use the breadcrumb to jump back to the fleet view
Source
Powered by /api/vessels/[imo], /api/vessels/[imo]/cii-daily, and /api/vessels/[imo]/voyages. Business logic in VoyageSegmentService and FleetService.