Bulk Carrier Emissions & Retrofit Radar
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.
CII band distribution
1,301 at D/E4,717 rated vessels · 628 of the D/E set dock within 12 months
Docking pipeline — D/E vessels per quarter
Windows estimated from the class-expiry docking model, not bookings.
Top eligible retrofit measures for this segment
| Measure | Eligible | CO₂ reduction | Capex band | Payback | Confidence |
|---|---|---|---|---|---|
| Propeller redesign / replacement | 4,904 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 4,854 | 2–6% | €300k–900k | — | vendor claim |
| Turbocharger cut-out | 3,788 | 1–3% | €80k–250k | — | vendor claim |
| Rotor sails (per unit) | 3,571 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 3,571 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Methanol dual-fuel conversion | 2,985 | 5–15% | €8,000k–20,000k | — | vendor claim |
Capex bands are indicative vendor/literature priors. Payback appears once price parameters are configured.
Retrofit opportunity in this segment
Retrofit prospects — worst band first
| Vessel | Band | Age | Drop year |
|---|---|---|---|
| STAITHES · 25-60k | E | 12y | 2026 |
| LANNA NAREE · 25-60k | E | 14y | 2026 |
| MAGNOLIA · 25-60k | E | 15y | 2026 |
| ASIAN PRIDE · 60-100k | E | 9y | 2026 |
| PERSEUS · 60-100k | E | 11y | 2026 |
| # | Vessel | Size (DWT) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 1951 |
SCOTER
IMO 9902299
|
38,270 | 2021 |
4.8
|
C |
| 1952 |
SHIPKA
IMO 9937282
|
32,198 | 2022 |
4.8
|
C |
| 1953 |
ZEPHYR VENTURE
IMO 9725914
|
43,343 | 2017 |
4.8
|
C |
| 1954 |
SSI NEMESIS
IMO 9311529
|
56,023 | 2005 |
4.8
|
C |
| 1955 |
AMOY CENTURY
IMO 9797008
|
61,438 | 2015 |
4.8
|
C |
| 1956 |
GENCO AQUITAINE
IMO 9490624
|
58,000 | 2009 |
4.8
|
C |
| 1957 |
THOR MENELAUS
IMO 9303924
|
55,710 | 2006 |
4.8
|
C |
| 1958 |
FEDERAL BISCAY
IMO 9697856
|
34,564 | 2015 |
4.8
|
C |
| 1959 |
GIEWONT
IMO 9452593
|
79,649 | 2010 |
4.8
|
C |
| 1960 |
MARINA S
IMO 9270919
|
32,723 | 2004 |
4.8
|
C |
| 1961 |
ALBERTA
IMO 9729568
|
62,958 | 2016 |
4.8
|
C |
| 1962 |
KIRAN ISTANBUL
IMO 9576973
|
63,610 | 2013 |
4.8
|
C |
| 1963 |
IONIC SMYRNI
IMO 9638070
|
56,025 | 2013 |
4.8
|
C |
| 1964 |
YASA LOTUS
IMO 9955624
|
40,282 | 2023 |
4.8
|
C |
| 1965 |
ANNIKA N
IMO 9514054
|
55,768 | 2011 |
4.8
|
C |
| 1966 |
MYKONOS DAWN
IMO 9762481
|
37,880 | 2017 |
4.8
|
C |
| 1967 |
BULK COLOMBIA
IMO 9426245
|
57,937 | 2006 |
4.8
|
C |
| 1968 |
ICE II
IMO 9401362
|
75,726 | 2008 |
4.8
|
C |
| 1969 |
DENSA DOLPHIN
IMO 9403190
|
58,772 | 2006 |
4.8
|
C |
| 1970 |
THE WISE
IMO 9318606
|
73,593 | 2007 |
4.8
|
C |
| 1971 |
JULIA
IMO 9820702
|
37,449 | 2018 |
4.8
|
C |
| 1972 |
SKYFALL
IMO 9724752
|
63,057 | 2016 |
4.8
|
C |
| 1973 |
HANSA NAREE
IMO 9738674
|
39,989 | 2018 |
4.8
|
C |
| 1974 |
YANGZE 8
IMO 9725732
|
63,515 | 2014 |
4.8
|
C |
| 1975 |
SKIATHOS
IMO 9497402
|
79,412 | 2011 |
4.8
|
C |
| 1976 |
PYTHIAS
IMO 9490703
|
58,018 | 2010 |
4.9
|
C |
| 1977 |
YASA KAPTAN ERBIL
IMO 9514341
|
56,169 | 2010 |
4.9
|
C |
| 1978 |
ANTWERP EAGLE
IMO 9699036
|
63,531 | 2015 |
4.9
|
C |
| 1979 |
PANORIA
IMO 9480930
|
53,514 | 2008 |
4.9
|
C |
| 1980 |
ASL TIA
IMO 9573713
|
63,227 | 2012 |
4.9
|
C |
| 1981 |
JABAL HAFIT
IMO 9735804
|
63,369 | 2017 |
4.9
|
C |
| 1982 |
CPT DIMITRIOS S
IMO 9221592
|
74,133 | 2001 |
4.9
|
C |
| 1983 |
AN CHANG
IMO 9407861
|
55,217 | 2009 |
4.9
|
C |
| 1984 |
WOOYANG HERMES
IMO 9421257
|
54,296 | 2008 |
4.9
|
C |
| 1985 |
OCEANLADY
IMO 9641364
|
56,715 | 2013 |
4.9
|
C |
| 1986 |
EFE BOSPHORUS
IMO 9710505
|
63,541 | 2016 |
4.9
|
C |
| 1987 |
CORAL ISLAND
IMO 9304112
|
55,699 | 2006 |
4.9
|
C |
| 1988 |
VALENTIN BUTUZOV
IMO 9707651
|
63,516 | 2015 |
4.9
|
C |
| 1989 |
TAC DAYTONA
IMO 9932115
|
40,217 | 2022 |
4.9
|
C |
| 1990 |
COLUMBIA
IMO 9423530
|
58,701 | 2009 |
4.9
|
C |
| 1991 |
FENG MAO HAI
IMO 9747510
|
63,413 | 2017 |
4.9
|
C |
| 1992 |
FORTUNE EXPRESS
IMO 9181728
|
30,109 | 1998 |
4.9
|
C |
| 1993 |
AFRICAN QUAIL
IMO 9738741
|
37,766 | 2015 |
4.9
|
C |
| 1994 |
KARDAM
IMO 9474668
|
56,536 | 2012 |
4.9
|
C |
| 1995 |
DYNA FLORESTA
IMO 9901805
|
52,804 | 2022 |
4.9
|
C |
| 1996 |
HMZ ISLAND
IMO 9231676
|
29,936 | 2002 |
4.9
|
C |
| 1997 |
PUNTA
IMO 9606118
|
52,000 | 2013 |
4.9
|
C |
| 1998 |
XING SHOU HAI
IMO 9760081
|
60,492 | 2016 |
4.9
|
C |
| 1999 |
AMIS ELEGANCE
IMO 9705421
|
55,404 | 2015 |
4.9
|
C |
| 2000 |
MITSOS
IMO 9637210
|
63,526 | 2013 |
4.9
|
C |
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.