Voyage estimate
Suezmax voyage: Supsa to Constanta
A Suezmax carrying 130,000 tonnes from Supsa to Constanta sails about 594 nm laden on the open-sea route, about 2.0 days at 12.5 knots. With the ballast leg back and 4 days in port, the round voyage takes about 7.9 days and burns about 242 tonnes of fuel.
Round voyage
7.9 d
2.0 d laden
Laden distance
594 nm
Shortest route
Fuel (VLSFO)
242 t
Round voyage
CO2
763 t
381 t in EU ETS
Round voyage breakdown
| Leg | Distance | Speed | Days | Fuel |
|---|---|---|---|---|
Laden Supsa → Constanta | 594 nm | 12.5 kn | 2.0 | 79 t |
Ballast Constanta → Supsa | 594 nm | 13 kn | 1.9 | 63 t |
Port time Loading and discharge | — | — | 4.0 | 100 t |
| Round voyage | 1,188 nm | 7.9 | 242 t |
Laden on the open-sea route; ballast on the open-sea route.
Emissions and EU ETS
The round voyage burns about 242 tonnes of VLSFO, emitting about 763 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 381 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
- 130,000 t
- Laden speed
- 12.5 kn at 40 t/day
- Ballast speed
- 13 kn at 33 t/day
- Port time
- 4 days at 25 t/day
- Laden draft
- 17 m
- CO2 factor
- 3.151 t per t fuel
Other ship sizes on this route
Questions
How long does a Suezmax take from Supsa to Constanta?
About 2 days laden at 12.5 knots over 594 nm on the open-sea route. The full round voyage, with the ballast leg back and 4 days in port, takes about 7.9 days.
How much fuel does a Suezmax burn on this voyage?
About 242 tonnes of VLSFO for the round voyage (79 t laden, 63 t ballast, 100 t in port), emitting about 763 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 381 tonnes of CO2, which means the same number of EU allowances to surrender.