Navalyze · Oil tanker · Ship

SEAGUARDIAN

IMO: 9891919
Type: Oil tanker
Average cargo carried: 50,331 t
Flag (estimated): Marshall Islands
Port of registry: Majuro
Technical efficiency: EEXI 3.03 g CO₂/t·nm

ISM company (DoC holder) in 2025: Valles Steamship (Canada) Ltd

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 50,331 t of cargo on average.

Fuel kg/nm

109

Oil tanker median 129 kg/nm (−15%)

CO₂ per transport work (cargo)

6.79

g CO₂/t·nm · Oil tanker median 7.95 (−15%)

Average speed

11.6 kn

Oil tanker median 10.7 kn (+8%)

Fuel per day at sea

30.2 t/day

Fuel consumed

7,278 t

CO₂ emitted

22,849 t

23,206 t CO₂eq incl. CH₄ and N₂O

Distance sailed

66,858 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,782 h

241 days, 66% 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 109 kg/nm · median 129 (−15%)

76.1Ranks 501 of 1,665, lowest first191

Average speedThis ship 11.6 kn · median 10.7 (+8%)

8.0Faster than 76% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 6.79 g CO₂/t·nm · median 7.95 (−15%)

4.51Ranks 608 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 EU37%
Into the EU55%
At berth in the EU8%

54% of this ship's CO₂ falls under the EU ETS (12,350 t).

Fuel burned laden

4,010 t

55% of all fuel; 45% in ballast or unladen

CO₂ at berth

1,851 t

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

Methane (CH₄)

0.4 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+357 t

+1.6% CO₂eq on top of CO₂ alone, from CH₄ and N₂O; counted in full from 2026

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

SEAGUARDIAN
Oil tanker median

100.0120.0140.0160.0

’212021’222022’232023’242024’252025

Average speed, kn

SEAGUARDIAN
Oil tanker median

9.010.011.012.0

’212021’222022’232023’242024’252025

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

SEAGUARDIAN
Oil tanker median

0.05.010.015.020.0

’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+2.5 kn	−25%	−4%	+420%	−2%	2.5 kn faster, fuel per mile down 25%; better than speed alone explains (hull, engine or trade).
2023→2024	−2.7 kn	−8%	−29%	+65%	−10%	2.7 kn slower, fuel per mile down 8%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.2 kn	+28%	+26%	−71%	+61%	Same speed, fuel per mile up 28%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+1.1 kn	−3%	+7%	+212%	−73%	1.1 kn faster, fuel per mile down 3%; 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	Valles Steamship (Canada) Ltd	7,278	22,849	66,858	5,782	11.6	109	6.79	55%
2024	Valles Steamship (Canada) Ltd	1,865	5,882	12,864	1,419	9.1	145	6.91	65%
2023	not published	1,226	3,874	7,793	661	11.8	157	7.71	73%
2022	not published	3,322	10,424	27,111	2,251	12.0	123	4.78	83%
2021	not published	1,098	3,497	8,685	796	10.9	126	18.0	18%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Valles Steamship (Canada) Ltd	6.79	7.95	−15%	608 of 1,665	ABS	B+C
2024	Valles Steamship (Canada) Ltd	6.91	8.06	−14%	658 of 1,787	ABS	B+C
2023	not published	7.71	8.44	−9%	785 of 1,797	ABS	B+C
2022	not published	4.78	8.51	−44%	184 of 1,961	ABS	C
2021	not published	18.0	8.86	+103%	1,478 of 1,789	ABS	C

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.