Navalyze · Oil tanker · Ship

SEAODYSSEY

IMO: 9740419
Type: Oil tanker
Average cargo carried: 63,627 t
Flag (estimated): Hong Kong (China)
Port of registry: Hong Kong
Technical efficiency: EEXI 3.12 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 63,627 t of cargo on average.

Fuel kg/nm

127

Oil tanker median 129 kg/nm (−1%)

CO₂ per transport work (cargo)

6.24

g CO₂/t·nm · Oil tanker median 7.95 (−22%)

Average speed

11.0 kn

Oil tanker median 10.7 kn (+3%)

Fuel per day at sea

33.4 t/day

Fuel consumed

5,043 t

CO₂ emitted

15,809 t

16,057 t CO₂eq incl. CH₄ and N₂O

Distance sailed

39,819 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,619 h

151 days, 41% 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 127 kg/nm · median 129 (−1%)

76.1Ranks 804 of 1,665, lowest first191

Average speedThis ship 11.0 kn · median 10.7 (+3%)

8.0Faster than 59% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 6.24 g CO₂/t·nm · median 7.95 (−22%)

4.51Ranks 488 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 ports3%
From the EU57%
Into the EU35%
At berth in the EU5%

54% of this ship's CO₂ falls under the EU ETS (8,541 t).

Fuel burned laden

3,344 t

66% of all fuel; 34% in ballast or unladen

CO₂ at berth

830 t

5.3% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.3 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+248 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

SEAODYSSEY
Oil tanker median

125.0130.0135.0140.0

’202020’212021’222022’242024’252025

Average speed, kn

SEAODYSSEY
Oil tanker median

10.511.011.512.0

’202020’212021’222022’242024’252025

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

SEAODYSSEY
Oil tanker median

0.05.010.015.020.0

’202020’212021’222022’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.1 kn	+1%	+2%	+373%	+30%	Same speed, fuel per mile flat.
2022→2024	+0.0 kn	−9%	−9%	+109%	−15%	Same speed, fuel per mile down 9%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.8 kn	+6%	−2%	−38%	−65%	0.8 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.2 kn	−6%	+4%	+10%	+122%	1.2 kn faster, fuel per mile down 6%; 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	5,043	15,809	39,819	3,619	11.0	127	6.24	66%
2024	Valles Steamship (Canada) Ltd	1,056	3,338	8,410	774	10.9	126	4.80	82%
2022	not published	559	1,752	4,033	372	10.9	139	5.65	61%
2021	not published	857	2,689	6,556	561	11.7	131	16.0	30%
2020	not published	832	2,614	5,959	566	10.5	140	7.23	–

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	6.24	7.95	−22%	488 of 1,665	ABS	B+C
2024	Valles Steamship (Canada) Ltd	4.80	8.06	−40%	243 of 1,787	ABS	B+C
2022	not published	5.65	8.51	−34%	378 of 1,961	ABS	B+C
2021	not published	16.0	8.86	+81%	1,420 of 1,789	ABS	B+C
2020	not published	7.23	9.03	−20%	617 of 1,870	ABS	B+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.