Navalyze · Oil tanker · Ship

MONTE UDALA

IMO: 9785823
Type: Oil tanker
Average cargo carried: 65,225 t
Flag (estimated): Portugal
Port of registry: Madeira
Technical efficiency: EEDI 2.71 g CO₂/t·nm

ISM company (DoC holder) in 2025: Ibaizabal Tankers SL

Report year

2020 at a glance

From the 2020 THETIS-MRV report. Carries about 1,203,308 t of cargo on average.

Fuel kg/nm

149

CO₂ per transport work (cargo)

0.39

g CO₂/t·nm

Average speed

12.3 kn

Fuel per day at sea

43.8 t/day

Fuel consumed

8,687 t

CO₂ emitted

27,426 t

Distance sailed

58,442 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,765 h

199 days, 54% 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 146 kg/nm · median 129 (+14%)

76.1Ranks 1,117 of 1,665, lowest first191

Average speedThis ship 10.7 kn · median 10.7 (+0%)

8.0Faster than 49% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 7.10 g CO₂/t·nm · median 7.95 (−11%)

4.51Ranks 668 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2020

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 EU42%
Into the EU49%
At berth in the EU9%

Fuel burned laden

4,170 t

48% of all fuel; 52% in ballast or unladen

CO₂ at berth

2,534 t

9.2% 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

MONTE UDALA
Oil tanker median

120.0130.0140.0150.0160.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

MONTE UDALA
Oil tanker median

9.010.011.012.013.0

’182018’192019’202020’212021’222022’232023’242024’252025

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

MONTE UDALA
Oil tanker median

0.02.55.07.510.0

’182018’192019’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−1.2 kn	+8%	−3%	−44%	+13%	1.2 kn slower, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.3 kn	−2%	+9%	+37%	–	1.3 kn faster, fuel per mile down 2%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.7 kn	−12%	−6%	−17%	–	0.7 kn faster, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.7 kn	+7%	+0%	+17%	–	0.7 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−1.7 kn	−1%	−15%	+7%	–	1.7 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.4 kn	+9%	+23%	+5%	–	1.4 kn faster, fuel per mile up 9%; better than speed alone explains (hull, engine or trade).
2018→2019	+0.1 kn	−5%	−5%	+21%	−17%	Same speed, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).

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	Ibaizabal Tankers SL	6,742	21,321	46,041	4,309	10.7	146	7.10	–
2024	Ibaizabal Tankers SL	11,243	35,463	82,738	6,973	11.9	136	6.28	–
2023	not published	8,382	26,418	60,300	5,686	10.6	139	0.38	45%
2022	not published	11,442	36,122	72,632	7,329	9.9	158	0.27	55%
2021	not published	9,192	29,013	62,308	5,896	10.6	148	0.37	51%
2020	not published	8,687	27,426	58,442	4,765	12.3	149	0.39	48%
2019	not published	7,595	23,747	55,772	5,137	10.9	136	0.34	65%
2018	not published	6,648	20,775	46,172	4,284	10.8	144	0.41	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Ibaizabal Tankers SL	7.10	7.95	−11%	668 of 1,665	Lloyd's Register	A
2024	Ibaizabal Tankers SL	6.28	8.06	−22%	524 of 1,787	Lloyd's Register	A
2023	not published	–	–	–	–	Lloyd's Register	A
2022	not published	–	–	–	–	Lloyd's Register	A
2021	not published	–	–	–	–	Lloyd's Register	A
2020	not published	–	–	–	–	Lloyd's Register	A
2019	not published	0.34	8.83	−96%	4 of 1,919	Lloyd's Register	–
2018	not published	0.41	8.86	−95%	11 of 1,779	Lloyd's Register	–

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.