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 |
|---|---|---|---|---|---|
| 1558 |
STAR HONG KONG
IMO 9743590
|
63,472 | 2016 |
4.2
|
C |
| 1556 |
AERIKO
IMO 9681546
|
63,351 | 2013 |
4.2
|
C |
| 1557 |
LIBERTY ISLAND
IMO 9520986
|
58,032 | 2007 |
4.2
|
C |
| 1553 |
KENNADI
IMO 9703576
|
63,262 | 2016 |
4.2
|
C |
| 1555 |
STAR VANCOUVER
IMO 9855850
|
63,614 | 2020 |
4.2
|
C |
| 1554 |
NEW ENDEAVOR
IMO 9579638
|
80,536 | 2011 |
4.2
|
C |
| 1552 |
PACIFIC ACHIEVEMENT
IMO 9712917
|
61,414 | 2016 |
4.2
|
C |
| 1551 |
BBG BRIGHT
IMO 9598177
|
82,043 | 2012 |
4.2
|
C |
| 1560 |
XIN HAI TONG 61
IMO 9600839
|
57,000 | 2010 |
4.2
|
C |
| 1559 |
TIGER JILIN
IMO 9712216
|
63,414 | 2015 |
4.2
|
C |
| 1563 |
PEARL ETERNITY
IMO 9950416
|
63,810 | 2022 |
4.2
|
C |
| 1569 |
BELHAVEN
IMO 9811945
|
63,430 | 2017 |
4.2
|
C |
| 1562 |
BULK PATIENCE
IMO 9764063
|
57,679 | 2016 |
4.2
|
C |
| 1570 |
SANTA MARIA
IMO 9675779
|
61,323 | 2014 |
4.2
|
C |
| 1561 |
HARMONY
IMO 9402017
|
54,958 | 2010 |
4.2
|
C |
| 1567 |
KALEY
IMO 9700689
|
63,261 | 2015 |
4.2
|
C |
| 1566 |
ANGLO JESSICA
IMO 9490480
|
114,664 | 2010 |
4.2
|
C |
| 1565 |
COLUMBIA
IMO 9423530
|
58,701 | 2009 |
4.2
|
C |
| 1564 |
DREAM SKY
IMO 9839076
|
63,480 | 2019 |
4.2
|
C |
| 1568 |
DESERT LEOPARD
IMO 1018016
|
63,569 | 2023 |
4.2
|
C |
| 1572 |
ODYSSEUS N
IMO 9490442
|
79,642 | 2011 |
4.3
|
C |
| 1571 |
RED AZALEA
IMO 9727417
|
61,299 | 2015 |
4.3
|
C |
| 1576 |
INDIGO BREEZE
IMO 9760160
|
60,430 | 2017 |
4.3
|
C |
| 1578 |
ASTRO REGULUS
IMO 9712979
|
60,417 | 2015 |
4.3
|
C |
| 1575 |
CORAL VI
IMO 9464405
|
76,596 | 2008 |
4.3
|
C |
| 1579 |
BELISLAND
IMO 9698197
|
61,252 | 2016 |
4.3
|
C |
| 1574 |
GRECO LIBERO
IMO 9713387
|
63,320 | 2015 |
4.3
|
C |
| 1573 |
VENEZIA
IMO 9799628
|
60,388 | 2017 |
4.3
|
C |
| 1577 |
CARAVOS TRIUMPH
IMO 9584310
|
81,664 | 2012 |
4.3
|
C |
| 1580 |
GEORGIA S
IMO 9502647
|
75,081 | 2011 |
4.3
|
C |
| 1581 |
STAR TEMBU
IMO 9497579
|
115,259 | 2011 |
4.3
|
C |
| 1584 |
GOLDEN PEARL
IMO 9470375
|
74,300 | 2013 |
4.3
|
C |
| 1583 |
APOLLON
IMO 9646663
|
75,614 | 2017 |
4.3
|
C |
| 1582 |
MARIA
IMO 9698329
|
63,153 | 2015 |
4.3
|
C |
| 1588 |
VELOS JASPER
IMO 9582491
|
82,030 | 2012 |
4.3
|
C |
| 1587 |
GOODWYN ISLAND
IMO 9802308
|
63,963 | 2015 |
4.3
|
C |
| 1589 |
NING TAI HAI
IMO 9751341
|
63,475 | 2017 |
4.3
|
C |
| 1586 |
NIGHTINGALE ISLAND
IMO 9705287
|
61,587 | 2013 |
4.3
|
C |
| 1585 |
DISCOVERY BAY
IMO 9737125
|
58,112 | 2016 |
4.3
|
C |
| 1592 |
PRINCESS MARIA
IMO 9483188
|
55,517 | 2009 |
4.3
|
C |
| 1598 |
CLIPPER BARI-STAR
IMO 9792711
|
37,976 | 2023 |
4.3
|
C |
| 1597 |
FJELD FREIA
IMO 9464780
|
80,333 | 2011 |
4.3
|
C |
| 1596 |
FASSA
IMO 9313503
|
55,447 | 2006 |
4.3
|
C |
| 1595 |
MAGIC SEAS
IMO 9736169
|
63,301 | 2016 |
4.3
|
C |
| 1594 |
SSI DAUNTLESS
IMO 9637428
|
57,200 | 2013 |
4.3
|
C |
| 1593 |
EQUINOX DREAM
IMO 9503964
|
58,680 | 2011 |
4.3
|
C |
| 1591 |
TRAPEZITZA
IMO 9968499
|
45,189 | 2024 |
4.3
|
C |
| 1590 |
CL MAOMING
IMO 9977361
|
64,733 | 2024 |
4.3
|
C |
| 1600 |
SM SANTOS
IMO 9842516
|
80,857 | 2020 |
4.3
|
C |
| 1599 |
QINGHE
IMO 9324631
|
52,450 | 2006 |
4.3
|
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.