Voyage estimate
Aframax voyage: Sture to Porvoo
A Aframax carrying 80,000 tonnes from Sture to Porvoo sails about 1,048 nm laden on the open-sea route, about 3.5 days at 12.5 knots. With the ballast leg back and 4 days in port, the round voyage takes about 10.8 days and burns about 286 tonnes of fuel.
Round voyage
10.8 d
3.5 d laden
Laden distance
1,048 nm
Shortest route
Fuel (VLSFO)
286 t
Round voyage
CO2
901 t
901 t in EU ETS
Round voyage breakdown
| Leg | Distance | Speed | Days | Fuel |
|---|---|---|---|---|
Laden Sture → Porvoo | 1,048 nm | 12.5 kn | 3.5 | 115 t |
Ballast Porvoo → Sture | 1,048 nm | 13 kn | 3.4 | 91 t |
Port time Loading and discharge | — | — | 4.0 | 80 t |
| Round voyage | 2,095 nm | 10.8 | 286 t |
Laden on the open-sea route; ballast on the open-sea route.
Emissions and EU ETS
The round voyage burns about 286 tonnes of VLSFO, emitting about 901 tonnes of CO2. Both ports are in the EU ETS area, so all emissions count: about 901 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 Sture to Porvoo?
About 3 days 12 hours laden at 12.5 knots over 1,048 nm on the open-sea route. The full round voyage, with the ballast leg back and 4 days in port, takes about 10.8 days.
How much fuel does a Aframax burn on this voyage?
About 286 tonnes of VLSFO for the round voyage (115 t laden, 91 t ballast, 80 t in port), emitting about 901 tonnes of CO2.
Is this voyage in the EU Emissions Trading System?
Yes. Both ports are in the EU ETS area, so all emissions count: about 901 tonnes of CO2, which means the same number of EU allowances to surrender.