Voyage estimate
Aframax voyage: Supsa to Trieste
A Aframax carrying 80,000 tonnes from Supsa to Trieste sails about 1,750 nm laden via the Bosphorus, about 5.8 days at 12.5 knots. With the ballast leg back and 4 days in port, the round voyage takes about 15.4 days and burns about 424 tonnes of fuel.
Round voyage
15.4 d
5.8 d laden
Laden distance
1,750 nm
Shortest route
Fuel (VLSFO)
424 t
Round voyage
CO2
1,336 t
668 t in EU ETS
Round voyage breakdown
| Leg | Distance | Speed | Days | Fuel |
|---|---|---|---|---|
Laden Supsa → Trieste | 1,750 nm | 12.5 kn | 5.8 | 192 t |
Ballast Trieste → Supsa | 1,750 nm | 13 kn | 5.6 | 151 t |
Port time Loading and discharge | — | — | 4.0 | 80 t |
| Round voyage | 3,499 nm | 15.4 | 424 t |
Laden via the Bosphorus; ballast via the Bosphorus.
Emissions and EU ETS
The round voyage burns about 424 tonnes of VLSFO, emitting about 1,336 tonnes of CO2. One end of the voyage is in the EU ETS area, so half of the emissions at sea count, plus emissions at the EU berth: about 668 tonnes of CO2, or the same number of EU allowances.
From 2026 shipping companies surrender allowances for 100% of in-scope emissions. Who pays is for the charter party to say.
Assumptions
- Cargo
- 80,000 t
- Laden speed
- 12.5 kn at 33 t/day
- Ballast speed
- 13 kn at 27 t/day
- Port time
- 4 days at 20 t/day
- Laden draft
- 14.5 m
- CO2 factor
- 3.151 t per t fuel
Other ship sizes on this route
Questions
How long does a Aframax take from Supsa to Trieste?
About 5 days 20 hours laden at 12.5 knots over 1,750 nm via the Bosphorus. The full round voyage, with the ballast leg back and 4 days in port, takes about 15.4 days.
How much fuel does a Aframax burn on this voyage?
About 424 tonnes of VLSFO for the round voyage (192 t laden, 151 t ballast, 80 t in port), emitting about 1,336 tonnes of CO2.
Is this voyage in the EU Emissions Trading System?
Yes. One end is in the EU ETS area, so half the sea emissions count, plus emissions at the EU berth: about 668 tonnes of CO2, which means the same number of EU allowances to surrender.