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 2025. 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 · 630 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 | 4,883 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 4,833 | 2–6% | €300k–900k | — | vendor claim |
| Turbocharger cut-out | 3,728 | 1–3% | €80k–250k | — | vendor claim |
| Rotor sails (per unit) | 3,512 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 3,512 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Methanol dual-fuel conversion | 2,973 | 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 |
|---|---|---|---|---|---|
| 2051 |
SEA WAVE
IMO 9986128
|
40,018 | 2024 |
4.8
|
C |
| 2052 |
XIN HAI TONG 10
IMO 9741580
|
48,924 | 2015 |
4.8
|
C |
| 2053 |
GLOBAL UNITY
IMO 9665542
|
63,238 | 2013 |
4.8
|
C |
| 2054 |
ALMYROS
IMO 9584138
|
56,768 | 2010 |
4.8
|
C |
| 2055 |
TABIT
IMO 9983229
|
40,004 | 2024 |
4.8
|
C |
| 2056 |
KARLINO
IMO 9727510
|
39,202 | 2019 |
4.8
|
C |
| 2057 |
KANG HUAN
IMO 9277644
|
52,810 | 2004 |
4.8
|
C |
| 2058 |
FLOURISH
IMO 9442225
|
55,638 | 2007 |
4.8
|
C |
| 2059 |
NALUHU
IMO 9520792
|
58,107 | 2010 |
4.8
|
C |
| 2060 |
SEA BREEZE
IMO 9869710
|
40,077 | 2021 |
4.8
|
C |
| 2061 |
MAHA AARTI
IMO 9355484
|
77,250 | 2006 |
4.8
|
C |
| 2062 |
GEORGIOS P
IMO 9476680
|
57,051 | 2010 |
4.8
|
C |
| 2063 |
PARIS TRADER
IMO 9945514
|
40,292 | 2023 |
4.8
|
C |
| 2064 |
ERGUVAN S
IMO 9603063
|
57,970 | 2011 |
4.9
|
D |
| 2065 |
NIKOS
IMO 9588512
|
56,928 | 2011 |
4.9
|
D |
| 2066 |
XIN HAI TONG 58
IMO 9503275
|
57,000 | 2012 |
4.9
|
D |
| 2067 |
ROSTRUM SAO PAULO
IMO 9997270
|
40,018 | 2025 |
4.9
|
D |
| 2068 |
CHRISTIANA P
IMO 9580508
|
80,562 | 2011 |
4.9
|
D |
| 2069 |
TERVEL
IMO 9638927
|
52,712 | 2012 |
4.9
|
D |
| 2070 |
RIVA
IMO 9693331
|
40,013 | 2016 |
4.9
|
D |
| 2071 |
MAVI VATAN
IMO 9336787
|
32,561 | 2007 |
4.9
|
D |
| 2072 |
BARROW ISLAND
IMO 9610743
|
58,044 | 2010 |
4.9
|
D |
| 2073 |
BROOMPARK
IMO 9989247
|
40,552 | 2023 |
4.9
|
D |
| 2074 |
ABILENE
IMO 9723057
|
63,127 | 2017 |
4.9
|
D |
| 2075 |
DENSA DOLPHIN
IMO 9403190
|
58,772 | 2006 |
4.9
|
D |
| 2076 |
MDS ARTEMIS
IMO 9480710
|
36,460 | 2007 |
4.9
|
D |
| 2077 |
MARMOR
IMO 9595149
|
38,464 | 2012 |
4.9
|
D |
| 2078 |
SAPPHIRE X
IMO 9621132
|
56,734 | 2013 |
4.9
|
D |
| 2079 |
TAC IMOLA
IMO 9932103
|
40,256 | 2021 |
4.9
|
D |
| 2080 |
SAKURA FORTUNE
IMO 9881172
|
39,936 | 2021 |
4.9
|
D |
| 2081 |
DARLEAKAY
IMO 9623647
|
58,018 | 2012 |
4.9
|
D |
| 2082 |
AGIA YPOMONI
IMO 9500297
|
75,508 | 2012 |
4.9
|
D |
| 2083 |
ERSOZ WEST
IMO 9710529
|
63,596 | 2013 |
4.9
|
D |
| 2084 |
ARAGONA
IMO 9729556
|
63,166 | 2015 |
4.9
|
D |
| 2085 |
KYNTHOS
IMO 9905289
|
63,563 | 2023 |
4.9
|
D |
| 2086 |
LOWLANDS ENGEL
IMO 9959462
|
40,056 | 2023 |
4.9
|
D |
| 2087 |
DREAM
IMO 9628116
|
81,547 | 2012 |
4.9
|
D |
| 2088 |
ER NAZIRE
IMO 9578543
|
56,716 | 2010 |
4.9
|
D |
| 2089 |
OKOLCHITSA
IMO 9841653
|
45,494 | 2020 |
4.9
|
D |
| 2090 |
EVA CARLTON
IMO 9972426
|
40,552 | 2023 |
4.9
|
D |
| 2091 |
JADE PROSPERITY
IMO 9656096
|
63,756 | 2014 |
4.9
|
D |
| 2092 |
CYTA
IMO 1015313
|
40,442 | 2024 |
4.9
|
D |
| 2093 |
WECO KAROLINE
IMO 9803417
|
38,905 | 2020 |
4.9
|
D |
| 2094 |
ROSTRUM AUSTRALIA
IMO 9941609
|
40,017 | 2023 |
4.9
|
D |
| 2095 |
CLACTON
IMO 9979498
|
40,547 | 2024 |
4.9
|
D |
| 2096 |
FEDERAL IBERVILLE
IMO 9820972
|
63,386 | 2018 |
4.9
|
D |
| 2097 |
TUO FU 8
IMO 9649249
|
81,721 | 2013 |
4.9
|
D |
| 2098 |
KAVO AETOS
IMO 9290232
|
52,384 | 2003 |
4.9
|
D |
| 2099 |
FEI RUN
IMO 9621015
|
56,928 | 2011 |
4.9
|
D |
| 2100 |
NITAYA NAREE
IMO 9700031
|
39,266 | 2015 |
4.9
|
D |
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 2025 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.