Navalyze · Container · Ship

YM WELLNESS

IMO: 9704623
Type: Container ship
Average cargo carried: 67,270 t
Port of registry: Singapore
Technical efficiency: EEXI 8.77 g CO₂/t·nm

ISM company (DoC holder) in 2025: Seaspan Ship Management Ltd.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 67,270 t of cargo on average.

Fuel per mile

206.7 kg/nm

Container median 177.0 kg/nm (+17%)

CO₂ per transport work (cargo)

9.57

g CO₂/t·nm · Container median 16.30 (−41%)

Average speed

8.9 kn

Container median 13.3 kn (−33%)

Fuel per day at sea

44.3 t/day

Fuel consumed

209 t

CO₂ emitted

650 t

660 t CO₂eq incl. CH₄ and N₂O

Distance sailed

1,009 nm

CO₂ ÷ CO₂ per mile

Time at sea

113 h

5 days, 1% of the year

Within the container fleet, 2025

Set against all 2,208 container 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 per mileThis ship 206.7 kg/nm · median 177.0 (+17%)

78.8Ranks 1,320 of 2,208, lowest first302.4

Average speedThis ship 8.9 kn · median 13.3 (−33%)

9.1Faster than 10% of container ships16.0

CO₂ per transport work (cargo)This ship 9.57 g CO₂/t·nm · median 16.30 (−41%)

7.22Ranks 530 of 2,208, lowest first46.89

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2025

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 EU32%
Into the EU56%
At berth in the EU12%

50% of this ship's CO₂ falls under the EU ETS (322 t).

Fuel burned laden

–

Not reported

CO₂ at berth

11.9%

Alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.015

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel per mile, kg/nm

YM WELLNESS
Container median

150.0175.0200.0225.0250.0275.0

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

Average speed, kn

YM WELLNESS
Container median

8.010.012.014.016.018.0

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

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

YM WELLNESS
Container median

5.010.015.020.025.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2023→2025	−1.5 kn	+5%	−10%	−87%	+90%	1.5 kn slower, fuel per mile up 5%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.2 kn	−18%	−20%	−67%	−26%	Same speed, fuel per mile down 18%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.2 kn	+18%	+16%	+200%	+11%	Same speed, fuel per mile up 18%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−3.8 kn	−14%	−37%	−82%	−11%	3.8 kn slower, fuel per mile down 14%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−0.8 kn	−9%	−14%	−45%	−19%	0.8 kn slower, fuel per mile down 9%; in line with the speed change.
2018→2019	−1.0 kn	+3%	−3%	−13%	+10%	1.0 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Seaspan Ship Management Ltd.	209	650	1,009	113	8.9	206.7	9.57	–
2023	not published	1,567	4,881	7,942	766	10.4	197.2	5.05	–
2022	not published	5,731	18,058	23,828	2,244	10.6	240.5	6.79	–
2021	not published	1,621	5,107	7,945	735	10.8	204.0	6.14	–
2020	not published	10,432	32,870	43,884	3,004	14.6	237.7	6.87	–
2019	not published	20,864	65,106	79,929	5,181	15.4	261.0	8.45	–
2018	not published	23,095	72,056	91,548	5,569	16.4	252.3	7.69	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	Seaspan Ship Management Ltd.	9.57	16.30	−41%	530 of 2,208	DNV	B+C
2023	not published	5.05	19.40	−74%	9 of 1,899	DNV	B+C
2022	not published	6.79	19.13	−65%	117 of 1,825	DNV	B+C
2021	not published	6.14	17.90	−66%	71 of 1,781	DNV	B+C
2020	not published	6.87	17.58	−61%	158 of 1,797	DNV	B+C
2019	not published	8.45	18.88	−55%	224 of 1,788	DNV	B+C
2018	not published	7.69	20.22	−62%	114 of 1,705	DNV	B+C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Container 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 container 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.