Navalyze · Ro-ro · Ship

ENDURANCE

IMO: 9121273
Type: Ro-ro ship
Average cargo carried: 4,969 t
Flag (estimated): United States
Port of registry: Wilmington, De
Technical efficiency: EEXI 12.53 g CO₂/t·nm

ISM company (DoC holder) in 2025: American Roll-On Roll-Off Carrier, LLC

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 8,934 t of cargo on average.

Fuel kg/nm

118

Ro-ro median 107 kg/nm (+10%)

CO₂ per transport work (cargo)

41.9

g CO₂/t·nm · Ro-ro median 109 (−61%)

Average speed

14.6 kn

Ro-ro median 14.6 kn (+0%)

Fuel per day at sea

41.2 t/day

Fuel consumed

8,477 t

CO₂ emitted

26,865 t

Distance sailed

71,821 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,935 h

206 days, 56% of the year

Within the ro-ro fleet, 2025

Set against all 235 ro-ro 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 118 kg/nm · median 105 (+13%)

56.6Ranks 154 of 235, lowest first145

Average speedThis ship 14.2 kn · median 14.4 (−1%)

10.9Faster than 47% of ro-ro ships17.0

CO₂ per transport work (cargo)This ship 74.7 g CO₂/t·nm · median 95.2 (−22%)

47.4Ranks 75 of 235, lowest first297

Middle 80% of shipsMiddle 50%Ro-ro medianThis ship

Where the emissions happen, 2023

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 ports13%
From the EU47%
Into the EU36%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

908 t

3.4% 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 Ro-ro median is the middle ship of all ro-ro ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

ENDURANCE
Ro-ro median

100.0120.0140.0160.0180.0

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

Average speed, kn

ENDURANCE
Ro-ro median

10.012.014.016.0

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

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

ENDURANCE
Ro-ro median

40.060.080.0100120

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.6 kn	+6%	+11%	−40%	+18%	0.6 kn faster, fuel per mile up 6%; in line with the speed change.
2023→2024	−1.0 kn	−6%	−12%	−11%	+51%	1.0 kn slower, fuel per mile down 6%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−1.4 kn	−26%	−33%	+7%	−25%	1.4 kn slower, fuel per mile down 26%; better than speed alone explains (hull, engine or trade).
2021→2022	+3.2 kn	+8%	+35%	+59%	−9%	3.2 kn faster, fuel per mile up 8%; better than speed alone explains (hull, engine or trade).
2020→2021	+0.2 kn	−10%	−9%	−23%	−24%	Same speed, fuel per mile down 10%; better than speed alone explains (hull, engine or trade).
2019→2020	+1.7 kn	−0%	+16%	−16%	−21%	1.7 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2018→2019	−5.0 kn	+8%	−26%	+23%	+13%	5.0 kn slower, fuel per mile up 8%; 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	American Roll-On Roll-Off Carrier, LLC	4,577	14,425	38,858	2,742	14.2	118	74.7	–
2024	American Roll-On Roll-Off Carrier, LLC	7,146	22,454	64,246	4,740	13.6	111	63.3	–
2023	not published	8,477	26,865	71,821	4,935	14.6	118	41.9	–
2022	not published	10,697	33,560	67,029	4,179	16.0	160	56.0	–
2021	not published	6,223	19,505	42,031	3,279	12.8	148	61.8	–
2020	not published	8,935	28,013	54,400	4,305	12.6	164	81.3	–
2019	not published	10,612	33,235	64,531	5,922	10.9	164	103	–
2018	not published	7,956	24,862	52,392	3,296	15.9	152	91.6	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Ro-ro median	vs Ro-ro	Rank	Verifier	Methods
2025	American Roll-On Roll-Off Carrier, LLC	74.7	95.2	−22%	75 of 235	DNV	A+C
2024	American Roll-On Roll-Off Carrier, LLC	63.3	97.5	−35%	43 of 220	DNV	A+C
2023	not published	41.9	109	−61%	7 of 221	DNV	A+B+C
2022	not published	56.0	57.7	−3%	223 of 463	DNV	B+C
2021	not published	61.8	59.6	+4%	245 of 459	DNV	B+C
2020	not published	81.3	57.3	+42%	340 of 449	DNV	B+C
2019	not published	103	59.0	+75%	364 of 426	DNV	B+C
2018	not published	91.6	62.4	+47%	333 of 434	DNV	B+C

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