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CNNGB GBFXT
Consumer electronics

Ningbo to Felixstowe freight CO2 emissions

One tonne of cargo shipped Ningbo (CNNGB) to Felixstowe (GBFXT) by sea emits 76.8 kg CO2e well-to-wake at GLEC v3.2 default factors. The same tonne by air emits 5,472 kg — roughly 71x the sea number.

Lane noteNingbo is the second-busiest Chinese export gateway after Shanghai; Felixstowe handles ~36% of UK container traffic. Post-Brexit customs friction adds 1-2 days at terminal but does not change the at-sea emissions number.

Per-tonne CO2e by mode

Sea freight

Container ship 10,000-18,000 TEU

76.8
kg CO2e
Distance
19,200 km
Factor (WTW)
4 g CO2e/tkm
Per shipment
1 t × 19,200 km
Factor source
GLEC v3.2 container 15,000-24,000 TEU (ULCV, WTW)

Air freight

Long-haul belly cargo

5,472
kg CO2e
Distance
9,000 km
Factor (WTW)
608 g CO2e/tkm
Per shipment
1 t × 9,000 km
Factor source
GLEC v3.2 long-haul belly cargo allocation (WTW)

Mode comparison

On the Ningbo to Felixstowe lane, air freight emits about 71 times more CO2e per tonne than sea freight at GLEC v3.2 defaults. The gap is driven by the WTW factor difference between long-haul belly cargo (608 g CO2e/tkm) and a Container ship 10,000-18,000 TEU (4 g CO2e/tkm), partly offset by the shorter great-circle air routing.

Try this in the calculator

These numbers are GLEC v3.2 defaults at 1 tonne. Change weight, vessel class, or load factor in the calculator and see the per-mode CO2e update under ISO 14083:2023 data quality tiers.

Methodology references

Need primary-data emissions for Ningbo to Felixstowe?

The EcoFreight API ingests AIS, bunker delivery notes, and shipment manifests to return ISO 14083 Tier 3 primary-data numbers for the same lane. Free tier covers 1,000 calculations per month.