Navalyze · Cruise · Ship

EXPLORER OF THE SEAS

IMO: 9161728
Type: Passenger ship (Cruise Passenger ship)
Flag (estimated): Bahamas
Port of registry: Nassau
Technical efficiency: EEXI 8.77 g CO₂/t·nm

ISM company (DoC holder) in 2025: RCL Cruises Ltd · part of Royal Caribbean Group

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

390

Passenger median 270 kg/nm (+44%)

CO₂ per transport work (pax)

372

g CO₂/pax·nm · Passenger median 625 (−40%)

Average speed

16.7 kn

Passenger median 13.7 kn (+22%)

Fuel per day at sea

156.5 t/day

Fuel consumed

23,625 t

CO₂ emitted

73,840 t

Distance sailed

60,653 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,622 h

151 days, 41% 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 405 kg/nm · median 264 (+54%)

89.6Ranks 179 of 202, lowest first416

Average speedThis ship 17.1 kn · median 13.1 (+31%)

10.8Faster than 99% of cruise ships15.5

CO₂ per transport work (pax)This ship 357 g CO₂/pax·nm · median 521 (−32%)

303Ranks 52 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 ports60%
From the EU12%
Into the EU15%
At berth in the EU13%

Fuel burned laden

–

Not reported

CO₂ at berth

9,333 t

12.6% 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

EXPLORER OF THE SEAS
Cruise median

0.0500.01,0001,5002,000

’192019’202020’232023’242024’252025

Average speed, kn

EXPLORER OF THE SEAS
Cruise median

8.010.012.014.016.018.0

’192019’202020’232023’242024’252025

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

EXPLORER OF THE SEAS
Cruise median

0.0200,000400,000600,000800,000

’192019’202020’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.1 kn	+5%	+5%	−19%	+4%	Same speed, fuel per mile up 5%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+0.5 kn	−1%	+1%	−6%	−8%	0.5 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2020→2023	+7.3 kn	−77%	−59%	+5,542%	−100%	7.3 kn faster, fuel per mile down 77%; better than speed alone explains (hull, engine or trade).
2019→2020	−4.1 kn	+321%	+193%	−98%	+165,525%	4.1 kn slower, fuel per mile up 321%; worse than speed alone explains (fouling, weather, loading or trade).

Part-year reports are left out of these comparisons. 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
2025part-year	RCL Cruises Ltd	18,755	58,785	46,308	2,708	17.1	405	–	–
2025	Royal Caribbean Cruises, Ltd.	18,755	58,785	46,308	2,708	17.1	405	–	–
2024part-year	RCL Cruises Ltd	1,758	5,477	4,727	262	18.1	372	–	–
2024	RCL Cruises Ltd	21,921	68,365	56,987	3,323	17.2	385	–	–
2023	not published	23,625	73,840	60,653	3,622	16.7	390	–	–
2020	not published	1,814	5,675	1,075	114	9.4	1,687	–	–
2019	not published	26,605	83,921	66,383	4,902	13.5	401	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/pax·nm	Cruise median	vs Cruise	Rank	Verifier	Methods
2025part-year	RCL Cruises Ltd	–	–	–	–	DNV	A
2025	Royal Caribbean Cruises, Ltd.	357	521	−32%	52 of 202	DNV	A
2024part-year	RCL Cruises Ltd	–	–	–	–	DNV	A
2024	RCL Cruises Ltd	342	618	−45%	33 of 202	DNV	A
2023	not published	372	625	−40%	33 of 202	DNV	A
2020	not published	658,674	1,169	+56,267%	98 of 100	DNV	A
2019	not published	398	589	−33%	44 of 177	DNV	A

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.