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 |
|---|---|---|---|---|---|
| 1503 |
TREASURE STAR
IMO 9461154
|
82,206 | 2010 |
4.2
|
C |
| 1502 |
C.S. COSMOS
IMO 1023736
|
39,841 | 2024 |
4.2
|
C |
| 1501 |
ESMERALDA
IMO 9430856
|
55,582 | 2009 |
4.2
|
C |
| 1508 |
JIN XIA FENG
IMO 9611711
|
81,537 | 2014 |
4.2
|
C |
| 1506 |
BULK DESTINY
IMO 9781994
|
59,450 | 2017 |
4.2
|
C |
| 1509 |
CAPTAIN SITARAS
IMO 9553713
|
61,000 | 2022 |
4.2
|
C |
| 1505 |
MIDJUR
IMO 9835771
|
47,070 | 2019 |
4.2
|
C |
| 1507 |
FEDERAL PRESTIGE
IMO 9942196
|
42,701 | 2023 |
4.2
|
C |
| 1504 |
STAR STONINGTON
IMO 9575151
|
63,301 | 2012 |
4.2
|
C |
| 1510 |
WADI SAFAGA
IMO 9460734
|
80,443 | 2010 |
4.2
|
C |
| 1511 |
ONE ENERGY
IMO 9592123
|
81,076 | 2011 |
4.2
|
C |
| 1513 |
AKSON MEISA
IMO 9446192
|
56,956 | 2010 |
4.2
|
C |
| 1512 |
ASTRO GRUMIUM
IMO 9714719
|
61,305 | 2015 |
4.2
|
C |
| 1517 |
XIN YU
IMO 9244362
|
74,090 | 2001 |
4.2
|
C |
| 1516 |
SEA TREASURE
IMO 9885427
|
61,192 | 2020 |
4.2
|
C |
| 1515 |
CEMTEX INNOVATION
IMO 9593048
|
81,326 | 2013 |
4.2
|
C |
| 1514 |
ARUNA HULYA
IMO 9635391
|
55,582 | 2012 |
4.2
|
C |
| 1520 |
ARCOLA
IMO 9932361
|
63,142 | 2022 |
4.2
|
C |
| 1519 |
MAJESTIC STAR
IMO 9865568
|
81,878 | 2020 |
4.2
|
C |
| 1518 |
GW ELENI
IMO 9874648
|
63,538 | 2020 |
4.2
|
C |
| 1521 |
SPRING RAINBOW
IMO 9666041
|
63,234 | 2014 |
4.2
|
C |
| 1534 |
ZALIV
IMO 9935806
|
61,146 | 2021 |
4.2
|
C |
| 1533 |
MICHALIS SAN
IMO 9648879
|
55,782 | 2013 |
4.2
|
C |
| 1532 |
APHROS
IMO 9460514
|
56,108 | 2013 |
4.2
|
C |
| 1531 |
TAI SPLENDOR
IMO 9727132
|
60,618 | 2013 |
4.2
|
C |
| 1530 |
BRILLIANT VENUS
IMO 9326392
|
106,482 | 2008 |
4.2
|
C |
| 1529 |
ANGELE N
IMO 9509528
|
55,804 | 2010 |
4.2
|
C |
| 1528 |
THEMIS
IMO 9452543
|
58,486 | 2007 |
4.2
|
C |
| 1527 |
MERGANSER
IMO 9959084
|
39,971 | 2023 |
4.2
|
C |
| 1526 |
PREMIERSHIP
IMO 9398747
|
170,024 | 2010 |
4.2
|
C |
| 1525 |
CHRYSANTHE
IMO 9497086
|
32,527 | 2011 |
4.2
|
C |
| 1524 |
UNION TRADER
IMO 9445710
|
57,700 | 2010 |
4.2
|
C |
| 1523 |
TEGEA
IMO 9478937
|
55,616 | 2011 |
4.2
|
C |
| 1535 |
STAR VALENCIA
IMO 9699311
|
63,556 | 2015 |
4.2
|
C |
| 1522 |
YEOMAN BRIDGE
IMO 8912302
|
96,772 | 1991 |
4.2
|
C |
| 1539 |
AURORA
IMO 9537630
|
79,607 | 2010 |
4.2
|
C |
| 1540 |
MISTRAL I
IMO 9650860
|
81,813 | 2013 |
4.2
|
C |
| 1538 |
PAN TOPAZ
IMO 9625827
|
82,787 | 2012 |
4.2
|
C |
| 1544 |
BERGE YOTEI
IMO 9866691
|
59,995 | 2020 |
4.2
|
C |
| 1542 |
NADINE V
IMO 9512563
|
93,759 | 2011 |
4.2
|
C |
| 1541 |
FATEMA JAHAN II
IMO 9425772
|
58,096 | 2010 |
4.2
|
C |
| 1537 |
XI HU
IMO 9707704
|
63,519 | 2019 |
4.2
|
C |
| 1543 |
CAPTAIN LEONARD
IMO 9425887
|
58,091 | 2010 |
4.2
|
C |
| 1536 |
KHADEEJAH JAHAN II
IMO 9407536
|
55,486 | 2009 |
4.2
|
C |
| 1550 |
AMIS TREASURE
IMO 9865362
|
61,125 | 2015 |
4.2
|
C |
| 1549 |
STAR VANCOUVER
IMO 9855850
|
63,614 | 2020 |
4.2
|
C |
| 1548 |
GLORY V
IMO 9288473
|
76,508 | 2005 |
4.2
|
C |
| 1547 |
LIGNUM WEB
IMO 9973054
|
42,541 | 2023 |
4.2
|
C |
| 1546 |
PACIFIC ACHIEVEMENT
IMO 9712917
|
61,414 | 2016 |
4.2
|
C |
| 1545 |
KENNADI
IMO 9703576
|
63,262 | 2016 |
4.2
|
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.