Navalyze · Container · Ship

YM WELLNESS

IMO: 9704623
Type: Container ship
Average cargo carried: 67,270 t
Flag (estimated): Singapore
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

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 102,352 t of cargo on average.

Fuel kg/nm

252

Container median 182 kg/nm (+39%)

CO₂ per transport work (cargo)

7.69

g CO₂/t·nm · Container median 20.2 (−62%)

Average speed

16.4 kn

Container median 13.8 kn (+19%)

Fuel per day at sea

99.5 t/day

Fuel consumed

23,095 t

CO₂ emitted

72,056 t

Distance sailed

91,548 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,569 h

232 days, 64% 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 kg/nmThis ship 207 kg/nm · median 177 (+17%)

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

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 16.3 (−41%)

7.22Ranks 530 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2018

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 ports12%
From the EU42%
Into the EU44%
At berth in the EU2%

Fuel burned laden

–

Not reported

CO₂ at berth

1,528 t

2.1% 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 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 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	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	Seaspan Ship Management Ltd.	209	650	1,009	113	8.9	207	9.57	–
2023	not published	1,567	4,881	7,942	766	10.4	197	5.05	–
2022	not published	5,731	18,058	23,828	2,244	10.6	241	6.79	–
2021	not published	1,621	5,107	7,945	735	10.8	204	6.14	–
2020	not published	10,432	32,870	43,884	3,004	14.6	238	6.87	–
2019	not published	20,864	65,106	79,929	5,181	15.4	261	8.45	–
2018	not published	23,095	72,056	91,548	5,569	16.4	252	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	16.3	−41%	530 of 2,208	DNV	B+C
2023	not published	5.05	19.4	−74%	9 of 1,899	DNV	B+C
2022	not published	6.79	19.1	−65%	117 of 1,825	DNV	B+C
2021	not published	6.14	17.9	−66%	71 of 1,781	DNV	B+C
2020	not published	6.87	17.6	−61%	158 of 1,797	DNV	B+C
2019	not published	8.45	18.9	−55%	224 of 1,788	DNV	B+C
2018	not published	7.69	20.2	−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.