Carbon Intensity Indicator (CII) Rating Calculator
Calculates vessel environmental index and matches score bounds to assign a rating from **A (Excellent)** to **E (Inferior)**.
Active Diagnostic Calculation
Attained CII
=
Mass of CO₂ emissions (g)
Capacity×Distance sailed
Mass of CO₂ emissions: 160 t = 16,00,00,000 grams
Capacity: Active hull payload limit is 80,000 DWT.
Distance sailed: Operating voyage length is 4,000 nm.
0.500 = 16,00,00,000 g / (80,000 × 4,000)
Voyage Performance Curve (Distance vs CII)
Plots Attained CII against Distance Sailed for a static capacity vessel payload.
Vessel Diagnostic CII Rating
Attained CII Value0.5g CO₂ / t·nmAssigned CII Grade
A
Bulk Carrier Grade Bands Scale
ABCDE
0.860.941.061.18
Based on standard bounds for Bulk Carrier, Grade bounds are:
- A/B limit: 0.86
- B/C limit: 0.94
- C/D limit: 1.06
- D/E limit: 1.18
Carbon Intensity Level Indicator
15%
Vessel Eco Efficiency Profile
A - Major Superior
Highly carbon-efficient cruise speed. Meets standard environmental benchmarks.