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SGSIN IDJKT
Transshipment cargo

Singapore to Jakarta freight CO2 emissions

One tonne of cargo shipped Singapore (SGSIN) to Jakarta (IDJKT) by sea emits 6.8 kg CO2e well-to-wake at GLEC v3.2 default factors. The same tonne by air emits 748 kg — roughly 111x the sea number.

Lane noteSingapore Strait feeder to Tanjung Priok — 36-48 hour sailings across the Singapore Strait and Java Sea. Singapore handles roughly 80% of Indonesian transshipment cargo; the lane runs as a dense feeder loop with daily departures.

Per-tonne CO2e by mode

Sea freight

Container ship 3,000-8,000 TEU

6.8
kg CO2e
Distance
900 km
Factor (WTW)
7.5 g CO2e/tkm
Per shipment
1 t × 900 km
Factor source
GLEC v3.2 container 8,000-15,000 TEU (Post-Panamax, WTW)

Air freight

Short-haul belly cargo

748
kg CO2e
Distance
880 km
Factor (WTW)
850 g CO2e/tkm
Per shipment
1 t × 880 km
Factor source
GLEC v3.2 short-haul belly cargo (WTW)

Mode comparison

On the Singapore to Jakarta lane, air freight emits about 111 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 (850 g CO2e/tkm) and a Container ship 3,000-8,000 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 Jakarta?

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.