Voyage estimate
VLCC voyage: Bonny to Trieste
A VLCC carrying 270,000 tonnes from Bonny to Trieste sails about 5,102 nm laden via the Strait of Gibraltar, about 17.0 days at 12.5 knots. With the ballast leg back and 4 days in port, the round voyage takes about 37.4 days and burns about 1,811 tonnes of fuel.
Round voyage
37.4 d
17.0 d laden
Laden distance
5,102 nm
Shortest route
Fuel (VLSFO)
1,811 t
Round voyage
CO2
5,707 t
2,853 t in EU ETS
Round voyage breakdown
| Leg | Distance | Speed | Days | Fuel |
|---|---|---|---|---|
Laden Bonny → Trieste | 5,102 nm | 12.5 kn | 17.0 | 935 t |
Ballast Trieste → Bonny | 5,102 nm | 13 kn | 16.4 | 736 t |
Port time Loading and discharge | — | — | 4.0 | 140 t |
| Round voyage | 10,204 nm | 37.4 | 1,811 t |
Laden via the Strait of Gibraltar; ballast via the Strait of Gibraltar.
Emissions and EU ETS
The round voyage burns about 1,811 tonnes of VLSFO, emitting about 5,707 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 2,853 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
- 270,000 t
- Laden speed
- 12.5 kn at 55 t/day
- Ballast speed
- 13 kn at 45 t/day
- Port time
- 4 days at 35 t/day
- Laden draft
- 22.5 m
- CO2 factor
- 3.151 t per t fuel
Other ship sizes on this route
Questions
How long does a VLCC take from Bonny to Trieste?
About 17 days laden at 12.5 knots over 5,102 nm via the Strait of Gibraltar. The full round voyage, with the ballast leg back and 4 days in port, takes about 37.4 days.
How much fuel does a VLCC burn on this voyage?
About 1,811 tonnes of VLSFO for the round voyage (935 t laden, 736 t ballast, 140 t in port), emitting about 5,707 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 2,853 tonnes of CO2, which means the same number of EU allowances to surrender.