Navalyze · Ro-ro · Ship

RO QUEEN

IMO: 9104263
Type: Ro-ro ship
Average cargo carried: 440 t
Port of registry: Panama
Technical efficiency: EEXI 23.50 g CO₂/t·nm
Former names: SEA AMAZON, SEA AMAZON H

ISM company (DoC holder) in 2024: Nook Trading Company

Report year

2024 at a glance

From the 2024 THETIS-MRV report. Carries about 440 t of cargo on average.

Fuel per mile

80.1 kg/nm

Ro-ro median 105.9 kg/nm (−24%)

CO₂ per transport work (cargo)

577

g CO₂/t·nm · Ro-ro median 97.53 (+491%)

Average speed

5.7 kn

Ro-ro median 14.5 kn (−61%)

Fuel per day at sea

10.9 t/day

Fuel consumed

328 t

CO₂ emitted

1,039 t

1,056 t CO₂eq incl. CH₄ and N₂O

Distance sailed

4,099 nm

CO₂ ÷ CO₂ per mile

Time at sea

723 h

30 days, 8% of the year

Within the ro-ro fleet, 2024

Set against all 220 ro-ro ships with a full-year 2024 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 80.1 kg/nm · median 105.9 (−24%)

59.5Ranks 47 of 220, lowest first146.1

Average speedThis ship 5.7 kn · median 14.5 (−61%)

10.4Faster than 0% of ro-ro ships17.1

CO₂ per transport work (cargo)This ship 576.80 g CO₂/t·nm · median 97.53 (+491%)

50.69Ranks 218 of 220, lowest first309.34

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

Where the emissions happen, 2024

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 ports61%
From the EU23%
Into the EU13%
At berth in the EU3%

82% of this ship's CO₂ falls under the EU ETS (853 t).

Fuel burned laden

–

Not reported

CO₂ at berth

3.2%

Alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

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 per mile, kg/nm

RO QUEEN
Ro-ro median

60.080.0100.0120.0

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

Average speed, kn

RO QUEEN
Ro-ro median

5.07.510.012.515.0

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

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

RO QUEEN
Ro-ro median

0.0200400600

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2023→2024	−8.1 kn	+19%	−51%	−94%	+38%	8.1 kn slower, fuel per mile up 19%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.6 kn	−24%	−21%	+125%	+494%	0.6 kn faster, fuel per mile down 24%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.5 kn	+29%	+25%	−45%	−86%	0.5 kn slower, fuel per mile up 29%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+2.6 kn	+2%	+25%	+4%	+12%	2.6 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2019→2020	−0.9 kn	+6%	−2%	+7%	+23%	0.9 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.4 kn	−6%	−9%	+3%	−23%	0.4 kn slower, fuel per mile down 6%; in line with the speed change.

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
2024	Nook Trading Company	328	1,039	4,099	723	5.7	80.1	576.80	–
2023	not published	4,754	14,994	70,800	5,117	13.8	67.2	418.15	–
2022	not published	2,797	8,738	31,526	2,385	13.2	88.7	70.40	–
2021	not published	3,925	12,401	57,309	4,191	13.7	68.5	520.05	–
2020	not published	3,714	11,799	55,219	4,966	11.1	67.3	463.93	–
2019	not published	3,289	10,292	51,609	4,311	12.0	63.7	376.32	–
2018	not published	3,372	10,552	49,934	4,012	12.4	67.5	488.70	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Ro-ro median	vs Ro-ro	Rank	Verifier	Methods
2024	Nook Trading Company	576.80	97.53	+491%	218 of 220	Swiss Climate	A
2023	not published	418.15	108.62	+285%	205 of 221	ICS Verification Services	A
2022	not published	70.40	90.62	−22%	68 of 223	ICS Verification Services	A
2021	not published	520.05	103.64	+402%	214 of 219	EMICERT	A
2020	not published	463.93	102.77	+351%	225 of 238	EMICERT	A
2019	not published	376.32	90.89	+314%	258 of 271	EMICERT	A
2018	not published	488.70	91.03	+437%	255 of 260	EMICERT	A+B

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.