Most Emission-Efficient LNG Carriers
Ships ranked by AER (Annual Efficiency Ratio) — grams of CO₂ emitted per tonne of deadweight carried one nautical mile (g CO₂/dwt·nm), the IMO carbon-intensity metric behind the CII rating — from official EU MRV emissions data for reporting year 2024. Lower is greener. Pick a segment and size class to see the greenest vessels first.
| # | Vessel | Size (DWT) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 251 |
NIKOLAY YEVGENOV
IMO 9750725
|
96,821 | 2019 |
9.3
|
D |
| 252 |
LNG BENUE
IMO 9267015
|
82,971 | 2006 |
9.4
|
D |
| 253 |
CORAL EVOLUTION
IMO 9955521
|
18,397 | 2024 |
9.4
|
D |
| 254 |
NIKOLAY URVANTSEV
IMO 9750660
|
96,779 | 2019 |
9.4
|
E |
| 255 |
LNG ALLIANCE
IMO 9320075
|
86,389 | 2007 |
9.5
|
E |
| 256 |
COOL ROVER
IMO 9333618
|
84,455 | 2008 |
9.5
|
E |
| 257 |
SONANGOL SAMBIZANGA
IMO 9475600
|
89,742 | 2007 |
9.6
|
E |
| 258 |
LNG ADAMAWA
IMO 9262211
|
79,566 | 2005 |
9.6
|
E |
| 259 |
LNG BAYELSA
IMO 9241267
|
79,822 | 2003 |
9.7
|
E |
| 260 |
VLADIMIR VORONIN
IMO 9750737
|
96,840 | 2019 |
9.8
|
E |
| 261 |
RUDOLF SAMOYLOVICH
IMO 9750713
|
96,703 | 2018 |
9.8
|
E |
| 262 |
VLADIMIR RUSANOV
IMO 9750701
|
96,844 | 2018 |
9.8
|
E |
| 263 |
SONANGOL BENGUELA
IMO 9482304
|
89,806 | 2011 |
9.8
|
E |
| 264 |
LNG OYO
IMO 9267003
|
83,068 | 2005 |
9.9
|
E |
| 265 |
ARCTIC AURORA
IMO 9645970
|
84,604 | 2013 |
10.0
|
E |
| 266 |
LNG BORNO
IMO 9322803
|
82,030 | 2007 |
10.0
|
E |
| 267 |
BERGE ARZEW
IMO 9256597
|
77,470 | 2004 |
10.1
|
E |
| 268 |
HOEGH GALLEON
IMO 9820013
|
86,057 | 2019 |
10.2
|
E |
| 269 |
POINT FORTIN
IMO 9375721
|
79,592 | 2010 |
10.2
|
E |
| 270 |
SEAPEAK GALICIA
IMO 9247364
|
79,166 | 2004 |
10.4
|
E |
| 271 |
LA PEROUSE
IMO 9849887
|
92,923 | 2020 |
10.4
|
E |
| 272 |
CORAL NORDIC
IMO 9919890
|
17,233 | 2022 |
10.6
|
E |
| 273 |
UMM BAB
IMO 9308431
|
79,460 | 2005 |
10.7
|
E |
| 274 |
KARADENIZ LNGT POWERSHIP ANATOLIA
IMO 9306495
|
86,389 | 2006 |
10.9
|
E |
| 275 |
AL JASRA
IMO 9132791
|
72,218 | 2000 |
11.0
|
E |
| 276 |
IBERICA KNUTSEN
IMO 9326603
|
77,541 | 2006 |
11.0
|
E |
| 277 |
SHANDONG JUNIPER
IMO 9253222
|
72,727 | 2004 |
11.1
|
E |
| 278 |
ARCTIC PRINCESS
IMO 9271248
|
84,878 | 2006 |
11.2
|
E |
| 279 |
ENERGOS PRINCESS
IMO 9253715
|
77,707 | 2003 |
11.3
|
E |
| 280 |
FUWAIRIT
IMO 9256200
|
74,067 | 2002 |
11.4
|
E |
| 281 |
AL DAAYEN
IMO 9325702
|
90,617 | 2007 |
11.4
|
E |
| 282 |
LNG AKWA IBOM
IMO 9262209
|
79,633 | 2004 |
11.4
|
E |
| 283 |
CADIZ KNUTSEN
IMO 9246578
|
77,228 | 2004 |
11.5
|
E |
| 284 |
AL KHOR
IMO 9085613
|
72,176 | 1996 |
11.7
|
E |
| 285 |
LNG RIVER NIGER
IMO 9262235
|
79,541 | 2006 |
11.7
|
E |
| 286 |
METHANE JANE ELIZABETH
IMO 9307190
|
78,984 | 2006 |
11.8
|
E |
| 287 |
ZEKREET
IMO 9132818
|
72,316 | 1995 |
12.3
|
E |
| 288 |
CHRISTOPHE DE MARGERIE
IMO 9737187
|
80,000 | 2016 |
12.4
|
E |
| 289 |
AL MARROUNA
IMO 9325685
|
81,936 | 2006 |
12.5
|
E |
| 290 |
SEAPEAK MADRID
IMO 9259276
|
77,213 | 2004 |
12.7
|
E |
| 291 |
LUSAIL
IMO 9285952
|
78,541 | 2005 |
12.8
|
E |
| 292 |
AL THAKHIRA
IMO 9298399
|
78,541 | 2005 |
13.2
|
E |
| 293 |
AL RAYYAN
IMO 9086734
|
72,430 | 1997 |
13.5
|
E |
| 294 |
TRADER III
IMO 9213416
|
75,849 | 2002 |
13.9
|
E |
| 295 |
CORAL ENERGICE
IMO 9783124
|
11,930 | 2018 |
14.0
|
E |
| 296 |
KITA LNG
IMO 9636723
|
89,752 | 2014 |
14.3
|
E |
| 297 |
CORAL ENERGY
IMO 9617698
|
12,268 | 2013 |
14.7
|
E |
| 298 |
ARCTIC LADY
IMO 9284192
|
84,878 | 2006 |
14.8
|
E |
| 299 |
AMUR RIVER
IMO 9317999
|
84,598 | 2008 |
15.9
|
E |
| 300 |
ARCTIC DISCOVERER
IMO 9276389
|
75,485 | 2006 |
16.1
|
E |
Which engines power the greenest fleets?
The main engine is the single largest CO₂ source on board — typically well over 80% of a ship's emissions come from propulsion. We aggregated this ranking the other way around: every engine design is scored by the measured carbon intensity of the vessels carrying it, licensee-built units merged under their design brand. The verdict from the 2024 data — modern dual-fuel designs like MAN B&W's ME-GI and WinGD's X-DF families, together with EGR/SCR-abated and ultra-long-stroke G-type engines, consistently power the most emission-friendly ships in service.
AER (Annual Efficiency Ratio) = annual CO₂ emissions ÷ (deadweight × distance sailed), the IMO carbon-intensity metric used for CII ratings. It is built only from measured CO₂, distance and deadweight — not the self-reported cargo transport-work figure, which is unreliable. Implausible outliers (top 2% per segment) are excluded. Grade A–E reflects each vessel's rank within its segment. Source: EMSA THETIS-MRV.