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 · 519 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 | 3,664 | 1–3% | €80k–250k | — | vendor claim |
| Rotor sails (per unit) | 3,455 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 3,455 | 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 |
|---|---|---|---|---|---|
| 1901 |
STAR ROWAYTON
IMO 9575216
|
63,301 | 2013 |
4.7
|
C |
| 1902 |
SEA CREDENCE
IMO 9479010
|
55,640 | 2010 |
4.7
|
C |
| 1903 |
INCE BEYLERBEYI
IMO 9599767
|
61,429 | 2012 |
4.7
|
C |
| 1904 |
DAMON
IMO 9575187
|
63,227 | 2012 |
4.7
|
C |
| 1905 |
DYNAGREEN
IMO 9919527
|
49,480 | 2022 |
4.7
|
C |
| 1906 |
GASTONE
IMO 9643295
|
81,521 | 2012 |
4.7
|
C |
| 1907 |
SAN ANTONIO
IMO 9514066
|
55,768 | 2012 |
4.7
|
C |
| 1908 |
IONIAN SEA
IMO 9860611
|
37,705 | 2019 |
4.7
|
C |
| 1909 |
ERMIONE
IMO 1020564
|
41,240 | 2025 |
4.7
|
C |
| 1910 |
HAKO
IMO 9691814
|
63,104 | 2014 |
4.7
|
C |
| 1911 |
XIN HAI TONG 20
IMO 9534145
|
56,753 | 2009 |
4.7
|
C |
| 1912 |
SOHAR
IMO 9771030
|
63,018 | 2021 |
4.7
|
C |
| 1913 |
SEAHARMONY
IMO 9688635
|
62,770 | 2015 |
4.7
|
C |
| 1914 |
BBG NOVA
IMO 9705342
|
63,314 | 2016 |
4.7
|
C |
| 1915 |
BORDEAUX
IMO 9483229
|
55,621 | 2011 |
4.7
|
C |
| 1916 |
MANDARIN RIVER
IMO 9533335
|
56,774 | 2011 |
4.7
|
C |
| 1917 |
LUCKY ALISA
IMO 9254525
|
75,318 | 2003 |
4.7
|
C |
| 1918 |
ES WARRIOR
IMO 9775854
|
60,513 | 2016 |
4.7
|
C |
| 1919 |
SHARK ISLAND
IMO 9520924
|
58,026 | 2011 |
4.7
|
C |
| 1920 |
ARIADNE
IMO 9492907
|
57,893 | 2013 |
4.7
|
C |
| 1921 |
NORD SANTOS
IMO 9926013
|
42,835 | 2022 |
4.7
|
C |
| 1922 |
FU XIANG
IMO 9603465
|
58,758 | 2012 |
4.7
|
C |
| 1923 |
KOUROS QUEEN
IMO 9502855
|
56,085 | 2012 |
4.7
|
C |
| 1924 |
XIN HAI TONG 31
IMO 9635626
|
57,450 | 2013 |
4.7
|
C |
| 1925 |
ASTRA N
IMO 9476290
|
55,762 | 2010 |
4.7
|
C |
| 1926 |
OCEANUS
IMO 9670925
|
63,385 | 2015 |
4.7
|
C |
| 1927 |
AQUARIUS
IMO 9634438
|
56,048 | 2013 |
4.7
|
C |
| 1928 |
ASTORIA
IMO 9663635
|
63,353 | 2013 |
4.7
|
C |
| 1929 |
PRINCESS MARGO
IMO 9720017
|
63,342 | 2015 |
4.7
|
C |
| 1930 |
THOR MERCURY
IMO 9300221
|
55,862 | 2005 |
4.7
|
C |
| 1931 |
PACIFIC FRIEDA
IMO 9274939
|
52,498 | 2005 |
4.7
|
C |
| 1932 |
INTEGRITY MAKOTO
IMO 9977933
|
39,583 | 2024 |
4.7
|
C |
| 1933 |
CRIMSON DELIGHT
IMO 9732163
|
57,955 | 2015 |
4.7
|
C |
| 1934 |
CBL SPRING
IMO 9482483
|
53,390 | 2009 |
4.7
|
C |
| 1935 |
COMMON SPIRIT
IMO 9594717
|
57,078 | 2011 |
4.7
|
C |
| 1936 |
LIBERTY
IMO 9423542
|
58,679 | 2009 |
4.7
|
C |
| 1937 |
FALCON KIZUNA
IMO 1032000
|
39,544 | 2025 |
4.7
|
C |
| 1938 |
GHALA
IMO 9687069
|
50,409 | 2013 |
4.7
|
C |
| 1939 |
WADI ALARAB
IMO 9107681
|
64,214 | 1995 |
4.7
|
C |
| 1940 |
KING WIN
IMO 9590230
|
56,809 | 2012 |
4.7
|
C |
| 1941 |
FUTURE
IMO 9566447
|
56,128 | 2012 |
4.7
|
C |
| 1942 |
GURNET BAY
IMO 9667045
|
35,761 | 2019 |
4.7
|
C |
| 1943 |
LUFFY
IMO 9609249
|
58,051 | 2012 |
4.7
|
C |
| 1944 |
KARDAM
IMO 9474668
|
56,536 | 2012 |
4.7
|
C |
| 1945 |
TRIGON TRADER
IMO 9863845
|
63,666 | 2021 |
4.7
|
C |
| 1946 |
DESERT HARRIER
IMO 9756626
|
60,447 | 2013 |
4.7
|
C |
| 1947 |
CIELO DI IYO
IMO 9808340
|
37,204 | 2017 |
4.7
|
C |
| 1948 |
CURIA
IMO 9710048
|
57,559 | 2015 |
4.7
|
C |
| 1949 |
ANYA
IMO 9730268
|
58,593 | 2013 |
4.7
|
C |
| 1950 |
ALBION BAY
IMO 9496989
|
58,755 | 2011 |
4.7
|
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 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.