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SGSIN GBFXT
Transshipment cargo

Singapore to Felixstowe freight CO2 emissions

One tonne of cargo shipped Singapore (SGSIN) to Felixstowe (GBFXT) by sea emits 120.8 kg CO2e well-to-wake at GLEC v3.2 default factors. The same tonne by air emits 6,590.7 kg — roughly 55x the sea number.

Lane noteAlternate UK gateway when Rotterdam transshipment is overflowing — vessels transit Suez and the Strait of Gibraltar before North Sea approach. Post-2023 Red Sea diversions push most calls around the Cape of Good Hope, adding ~3,500 nm per loop.

Per-tonne CO2e by mode

Sea freight

Container ship 8,000+ TEU

120.8
kg CO2e
Distance
16,100 km
Factor (WTW)
7.5 g CO2e/tkm
Per shipment
1 t × 16,100 km
Factor source
GLEC v3.2 container 8,000-15,000 TEU (Post-Panamax, WTW)

Air freight

Long-haul belly cargo

6,590.7
kg CO2e
Distance
10,840 km
Factor (WTW)
608 g CO2e/tkm
Per shipment
1 t × 10,840 km
Factor source
GLEC v3.2 long-haul belly cargo allocation (WTW)

Mode comparison

On the Singapore to Felixstowe lane, air freight emits about 55 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 8,000+ TEU (7.5 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 Singapore 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.