Navalyze · Oil tanker · Ship

MARCILIO DIAS

IMO: 9453858
Type: Oil tanker
Average cargo carried: 86,095 t
Flag (estimated): Brazil
Port of registry: Rio De Janeiro
Technical efficiency: EEDI 3.08 g CO₂/t·nm

ISM company (DoC holder) in 2025: PETROBRAS TRANSPORTE S.A - TRANSPETRO

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 73,382 t of cargo on average.

Fuel kg/nm

159

Oil tanker median 129 kg/nm (+24%)

CO₂ per transport work (cargo)

6.78

g CO₂/t·nm · Oil tanker median 8.86 (−23%)

Average speed

12.2 kn

Oil tanker median 10.7 kn (+14%)

Fuel per day at sea

46.5 t/day

Fuel consumed

1,253 t

CO₂ emitted

3,913 t

Distance sailed

7,864 nm

CO₂ ÷ CO₂ per mile

Time at sea

646 h

27 days, 7% of the year

Within the oil tanker fleet, 2025

Set against all 1,665 oil tanker ships with a full-year 2025 report. Bigger ships burn more per mile but less per tonne of cargo, so read fuel per mile with the ship's size in mind.

Fuel kg/nmThis ship 215 kg/nm · median 129 (+67%)

76.1Ranks 1,572 of 1,665, lowest first191

Average speedThis ship 10.3 kn · median 10.7 (−4%)

8.0Faster than 37% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 7.80 g CO₂/t·nm · median 7.95 (−2%)

4.51Ranks 804 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2021

THETIS splits each ship's CO₂ by voyage type. The split sets how much falls under the EU ETS: all of it within the EU and at berth, half of it on voyages into or out of the EU.

Between EU ports0%
From the EU40%
Into the EU51%
At berth in the EU8%

Fuel burned laden

645 t

52% of all fuel; 49% in ballast or unladen

CO₂ at berth

319 t

8.1% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

Over the years

Full-year reports only. The Oil tanker median is the middle ship of all oil tanker ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

MARCILIO DIAS
Oil tanker median

125.0150.0175.0200.0225.0

’192019’202020’212021’232023’242024’252025

Average speed, kn

MARCILIO DIAS
Oil tanker median

9.010.011.012.013.0

’192019’202020’212021’232023’242024’252025

CO₂ per transport work (cargo), g CO₂/t·nm

MARCILIO DIAS
Oil tanker median

6.07.08.09.010.011.0

’192019’202020’212021’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−1.8 kn	+14%	−3%	−71%	−27%	1.8 kn slower, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.4 kn	+10%	+6%	+122%	+19%	0.4 kn slower, fuel per mile up 10%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2023	+0.3 kn	+8%	+11%	+25%	+33%	0.3 kn faster, fuel per mile up 8%; in line with the speed change.
2020→2021	+0.2 kn	−22%	−21%	−7%	−29%	Same speed, fuel per mile down 22%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.2 kn	−6%	−7%	−56%	−3%	Same speed, fuel per mile down 6%; in line with the speed change.

Fuel per mile rises roughly with the square of speed for a given ship, so a change in speed explains much of a change in fuel per mile.

Every reporting year

One row per THETIS-MRV report. A ship that changed operator during a year has a part-year report for each.

Operation

Year	ISM company	Fuel t	CO₂ t	Distance nm	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	PETROBRAS TRANSPORTE S.A - TRANSPETRO	1,380	4,310	6,418	625	10.3	215	7.80	–
2024	PETROBRAS TRANSPORTE S.A - TRANSPETRO	4,131	12,935	21,903	1,805	12.1	189	10.8	–
2023	not published	1,690	5,331	9,866	786	12.5	171	9.00	–
2021	not published	1,253	3,913	7,864	646	12.2	159	6.78	52%
2020	not published	1,737	5,426	8,499	706	12.0	204	9.53	58%
2019	not published	4,157	13,029	19,185	1,573	12.2	217	9.78	46%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	PETROBRAS TRANSPORTE S.A - TRANSPETRO	7.80	7.95	−2%	804 of 1,665	ABS	B
2024	PETROBRAS TRANSPORTE S.A - TRANSPETRO	10.8	8.06	+33%	1,235 of 1,787	ABS	B
2023	not published	9.00	8.44	+7%	985 of 1,797	ABS	B
2021	not published	6.78	8.86	−23%	551 of 1,789	ABS	B
2020	not published	9.53	9.03	+6%	995 of 1,870	ABS	B
2019	not published	9.78	8.83	+11%	1,107 of 1,919	ABS	B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Oil tanker ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·nm. CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's oil tanker ships. Methods: A delivery notes, B tank monitoring, C flow meters, D direct measurement. FuelEU GHG intensity is not shown: it needs fuel types, which the public file does not carry. Operators are named only from 2024, the first year the public files carry them; earlier years belong to the ship, not to any company.