Navalyze · Cruise · Ship

MARELLA DISCOVERY 2

IMO: 9070620
Type: Passenger ship (Cruise Passenger ship)
Flag (estimated): Bahamas
Port of registry: Nassau
Technical efficiency: EEDI 12.01 g CO₂/t·nm

ISM company (DoC holder) in 2025: MARELLA CRUISES LIMITED

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

279

Passenger median 270 kg/nm (+3%)

CO₂ per transport work (pax)

493

g CO₂/pax·nm · Passenger median 625 (−21%)

Average speed

16.6 kn

Passenger median 13.7 kn (+21%)

Fuel per day at sea

111.4 t/day

Fuel consumed

13,408 t

CO₂ emitted

42,197 t

Distance sailed

47,994 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,890 h

120 days, 33% of the year

Within the cruise fleet, 2025

Set against all 202 cruise 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 282 kg/nm · median 264 (+7%)

89.6Ranks 112 of 202, lowest first416

Average speedThis ship 13.5 kn · median 13.1 (+3%)

10.8Faster than 58% of cruise ships15.5

CO₂ per transport work (pax)This ship 519 g CO₂/pax·nm · median 521 (−0%)

303Ranks 100 of 202, lowest first1,701

Middle 80% of shipsMiddle 50%Cruise 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 ports71%
From the EU5%
Into the EU9%
At berth in the EU15%

Fuel burned laden

11,437 t

85% of all fuel; 15% in ballast or unladen

CO₂ at berth

6,296 t

14.9% 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 Cruise median is the middle ship of all cruise ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

MARELLA DISCOVERY 2
Cruise median

200.0250.0300.0350.0400.0450.0

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

Average speed, kn

MARELLA DISCOVERY 2
Cruise median

10.012.014.016.018.0

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

CO₂ per transport work (pax), g CO₂/pax·nm

MARELLA DISCOVERY 2
Cruise median

0.050,000100,000150,000

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

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	−5%	−1%	+65%	−3%	0.6 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2023→2024	−3.7 kn	+6%	−17%	−20%	+9%	3.7 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.1 kn	+2%	+10%	+10%	−15%	1.1 kn faster, fuel per mile up 2%; better than speed alone explains (hull, engine or trade).
2020→2022	+2.9 kn	−38%	−24%	+635%	−100%	2.9 kn faster, fuel per mile down 38%; better than speed alone explains (hull, engine or trade).
2019→2020	−1.2 kn	+20%	+9%	−86%	+22,015%	1.2 kn slower, fuel per mile up 20%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.5 kn	+10%	+6%	+6%	+9%	0.5 kn slower, fuel per mile up 10%; 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	MARELLA CRUISES LIMITED	17,905	56,041	63,600	4,697	13.5	282	–	81%
2024	MARELLA CRUISES LIMITED	11,407	35,923	38,488	2,975	12.9	296	–	76%
2023	not published	13,408	42,197	47,994	2,890	16.6	279	–	85%
2022	not published	11,915	37,336	43,614	2,814	15.5	273	–	84%
2020	not published	2,628	8,294	5,933	471	12.6	443	–	–
2019	not published	15,701	49,174	42,481	3,069	13.8	370	–	–
2018	not published	13,537	42,418	40,188	2,813	14.3	337	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/pax·nm	Cruise median	vs Cruise	Rank	Verifier	Methods
2025	MARELLA CRUISES LIMITED	519	521	−0%	100 of 202	ABS	A+B
2024	MARELLA CRUISES LIMITED	536	618	−13%	92 of 202	ABS	A+B
2023	not published	493	625	−21%	77 of 202	ABS	A+B
2022	not published	578	831	−30%	43 of 187	ABS	B
2020	not published	139,793	1,169	+11,863%	94 of 100	ABS	B
2019	not published	632	589	+7%	95 of 177	ABS	B
2018	not published	579	577	+0%	78 of 153	ABS	B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Cruise ships are benchmarked on CO₂ per transport work (pax) (TW), in g CO₂/pax·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 cruise 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.