General Cargo 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.

Segment rank (2025)

#122 of 2,380 general cargos

CO₂ intensity

4.9 g CO₂/dwt·nm

vs segment average (13.95)

-65% greener

Bulk Carrier Container Ship Oil Tanker Chemical Tanker Gas Carrier LNG Carrier General Cargo Vehicle Carrier Refrigerated Cargo Ro-Ro Cargo

CII band distribution

516 at D/E

A 1,027B 685C 507D 261E 255

2,735 rated vessels · 242 of the D/E set dock within 12 months

Docking pipeline — D/E vessels per quarter

'27 Q1

'27 Q2

'27 Q3

'27 Q4

'28 Q1

'28 Q2

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	1,466	5–10%	€400k–1,200k	—	vendor claim
Rotor sails (per unit)	627	route-dependent	€1,500k–3,500k	—	vendor claim
Suction wing sails (per unit)	627	route-dependent	€1,000k–2,500k	—	vendor claim
Bulbous bow reprofiling	572	2–6%	€300k–900k	—	vendor claim
Turbocharger cut-out	525	1–3%	€80k–250k	—	vendor claim
Shaft generator / PTO	101	3–6%	€500–1,500/kW	—	vendor claim

Capex bands are indicative vendor/literature priors. Payback appears once price parameters are configured.

Retrofit opportunity in this segment

244

D/E vessels with at least one eligible measure

€95–286M

capex range, top measure per vessel (244 of 244 with computable scaling)

0.06–0.11 Mt

annual CO₂ reduction available (vendor-claimed ranges × reported emissions)

Retrofit prospects — worst band first

Vessel	Band	Age	Drop year	Req. reduction 2030	Dock window
PACIFIC INTEGRITY · <25k	E	15y	2026	99%	Jun 2026
CLAUDIO CUCCO · <25k	E	40y	2026	98%	May 2026
GINO CUCCO · <25k	E	39y	2026	98%	Oct 2027
GIUSEPPE CUCCO · <25k	E	49y	2026	98%	May 2028
LADY OF CHICHESTER · <25k	E	56y	2026	98%	Dec 2028

See all 2,735 rated general cargos with exposure and dock windows. Sign in →

Sort 🌱 Greenest first 🔧 Least efficient first — retrofit candidates

Size (DWT)

All sizes < 25,000 DWT 25k – 60k DWT 60k – 100k DWT 100k – 200k DWT > 200,000 DWT

Year

2025 2024

2,429

vessels ranked

3.13

greenest (g CO₂/dwt·nm)

14.48

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
101	OCEANA SKY IMO 9189938	50,655	1998	195 m	Mitsubishi - 6UEC60LSII	4.8	A
102	EAGLE ARROW IMO 9529592	62,967	2011	200 m	Kawasaki - 6S50MC-C	4.8	A
103	EIKE OLDENDORFF IMO 9794472	38,520	2017	180 m	Yichang - 5S50ME-B9	4.8	A
104	GOLD OAK IMO 9806342	37,732	2017	180 m	MAKITA - 6S50ME-C8	4.8	A
107	ESTRELLA IMO 9477270	50,448	2012	183 m	MAN - 6S50MC-C	4.8	A
106	HOSANGER IMO 9081801	50,211	1995	213 m	MAN - 6L23/30	4.8	A
105	CALYPSO.GR IMO 9785134	37,865	2017	180 m	MAKITA - 6S50ME-C8	4.8	A
108	GREEN HELSINKI IMO 9976068	68,022	2023	227 m	MAN-B&W 6S60ME-C10	4.8	A
109	SOUND PEARL IMO 9452907	52,125	2011	188 m	MAN - 6S50MC-C	4.8	A
110	CHANNEL PEARL IMO 9644550	50,633	2012	183 m	Mitsubishi - 6UEC50LSII	4.8	A
111	POLSTEAM OKRA IMO 9984819	37,592	2024	200 m	MAN-B&W 5S50ME-C9	4.9	A
112	POLAND PEARL IMO 9731236	45,474	2015	183 m	Mitsui - 6S50MC-C8	4.9	A
113	COSCO SHIPPING HONOR IMO 9881653	62,013	2020	202 m	DALIAN MARINE - 5G60ME-C9	4.9	A
115	JU FU IMO 1072828	61,346	2025	200 m	MAN-B&W 6S50ME-C9	4.9	A
114	AFRICAN PIPIT IMO 9890903	37,636	2020	180 m	MAKITA - 6S50ME-C8	4.9	A
117	BERGE JUNGFRAU IMO 9846304	37,683	2019	180 m	MAKITA - 6S50ME-C8	4.9	A
116	COSCO SHIPPING GRACE IMO 9928865	61,613	2021	202 m	Dalian Marine Diesel Works 5G60ME-C10	4.9	A
118	FERUSA R IMO 9668556	37,429	2014	180 m	Kawasaki - 5S50ME-C8.2	4.9	A
119	SAGA FALCON IMO 9613848	55,596	2012	200 m	STX - 5S60ME-C8	4.9	A
120	AFRICAN RAVEN IMO 9700287	37,711	2014	183 m	Hitachi - 6S46ME-C8.3	4.9	A
121	TATUNG IMO 9811921	37,685	2018	180 m	MAN - 6S50ME-C8	4.9	A
125	SAGA DISCOVERY IMO 9317418	46,618	2006	199 m	Diesel United - 7RTA52	4.9	A
124	OPTIMANA IMO 9253856	57,599	2003	212 m	6S60MC	4.9	A
123	AMBER CONFIDENCE IMO 9866550	37,720	2020	180 m	MAN - 6S46ME-B8	4.9	A
122	DEVBULK KAYA IMO 9530711	40,527	2012	185 m	Hitachi - 6S46MC-CMKVIII	4.9	A
126	LOUISE IMO 9470301	37,207	2012	178 m	Akasaka - 6UEC52LA	4.9	A
127	TUJU ARROW IMO 9443920	72,863	2010	225 m	Kawasaki - 6S60MC-C	4.9	A
128	GREEN ITAQUI IMO 9976410	64,996	2024	225 m	MAN B&W 5G60ME-C9	4.9	A
129	CANADA PEARL IMO 9659749	45,566	2014	183 m	MAN - 6S50MC-C8	5.0	A
131	SAGA VOYAGER IMO 9233454	46,882	2001	199 m	Sulzer - 7RTA52	5.0	A
130	SAGA ODYSSEY IMO 9401788	46,500	2008	199 m	Diesel United - 7RTA52U	5.0	A
133	DRINA S IMO 9635743	38,037	2012	180 m	MAKITA - 6S46MC-C	5.0	A
132	POLSTEAM PILE IMO 9971886	37,592	2024	200 m	MAN-B&W 5S50ME-C9	5.0	A
134	VELVET IMO 9782651	37,324	2021	180 m	MAN - 6S50ME-B9.3	5.0	A
135	BBC MARS IMO 9947770	40,297	2022	180 m	CSIC Diesel Engine Co Ltd 5S60ME-C9	5.0	A
136	PUFFIN ARROW IMO 9566605	62,967	2011	200 m	MAN - 6S50MC-CMKVIII	5.0	A
138	STAR HARMONIA IMO 9103130	46,604	1998	198 m	6S60MC	5.0	A
137	HOYANGER IMO 9100073	50,194	1995	213 m	MAN - 6L23/30	5.0	A
139	SAGA MONAL IMO 9117739	56,801	1996	200 m	6S60MC	5.0	A
141	SAGA FUTURE IMO 9613836	55,596	2012	200 m	STX - 5S60MC-C8	5.1	A
140	STAR JAVA IMO 9310513	44,692	2006	198 m	Mitsui - 6S60MC	5.1	A
142	STAR KINN IMO 9396141	49,850	2010	209 m	Hyundai - 5 S 60 MC-C	5.1	A
143	POLSTEAM KOPROWO IMO 9971862	37,592	2024	200 m	MAN-B&W 5S50ME-C9	5.1	A
144	STAR HANSA IMO 9103128	46,428	1995	198 m	Mitsui - 6S60MC	5.1	A
148	UNI BLOSSOM IMO 9816567	37,634	2018	180 m	MAN - 6S46MC-C	5.1	A
147	PANAMANA IMO 9401805	58,022	2010	212 m	Kawasaki - 6S60MC	5.1	A
146	ADASUN IMO 9747053	34,483	2017	180 m	MAN - 6S46ME-B8	5.1	A
145	POLSTEAM LEBSKO IMO 9971874	37,574	2024	200 m	MAN-B&W 5S50ME-C9	5.1	A
150	STAR LYSEFJORD IMO 9616840	50,728	2014	204 m	MAN - 5S60ME-C8	5.1	A
149	POLSTEAM INSKO IMO 9984833	37,630	2025	200 m	MAN-B&W 5S50ME-C9	5.1	A

Page 3 of 48 — 2,380 vessels

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Engine intelligence

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.

Emission-friendly engine ranking

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.