Voyage estimate
Suezmax voyage: Houston to Gdansk
A Suezmax carrying 130,000 tonnes from Houston to Gdansk sails about 5,566 nm laden on the open-sea route, about 18.6 days at 12.5 knots. With the ballast leg back and 4 days in port, the round voyage takes about 40.4 days and burns about 1,431 tonnes of fuel.
Round voyage
40.4 d
18.6 d laden
Laden distance
5,566 nm
Shortest route
Fuel (VLSFO)
1,431 t
Round voyage
CO2
4,508 t
2,254 t in EU ETS
Round voyage breakdown
| Leg | Distance | Speed | Days | Fuel |
|---|---|---|---|---|
Laden Houston → Gdansk | 5,566 nm | 12.5 kn | 18.6 | 742 t |
Ballast Gdansk → Houston | 5,566 nm | 13 kn | 17.8 | 589 t |
Port time Loading and discharge | — | — | 4.0 | 100 t |
| Round voyage | 11,131 nm | 40.4 | 1,431 t |
Laden on the open-sea route; ballast on the open-sea route.
Emissions and EU ETS
The round voyage burns about 1,431 tonnes of VLSFO, emitting about 4,508 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 2,254 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 Houston to Gdansk?
About 18 days 13 hours laden at 12.5 knots over 5,566 nm on the open-sea route. The full round voyage, with the ballast leg back and 4 days in port, takes about 40.4 days.
How much fuel does a Suezmax burn on this voyage?
About 1,431 tonnes of VLSFO for the round voyage (742 t laden, 589 t ballast, 100 t in port), emitting about 4,508 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 2,254 tonnes of CO2, which means the same number of EU allowances to surrender.