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Compare operators, 2025

Pick a company or group, then the competitors to hold it against, or compare verifiers. Every figure comes from the public THETIS-MRV reports for EU and EEA voyages.

Wilhelmsen Ahrenkielyour view

Side by side

All 2025 reports of each operator, across every ship type. Change is against 2024 where the operator reported then.

	Wilhelmsen Ahrenkiel
Ships	24
CO₂ emitted	354 kt−22.3%
Fuel kg/nm	149
Average speed	12.9 kn
CO₂ at berth	2.4%
Ships burning LNG	0
Ships using alternative fuel	1
Main segment	Container

Fuel per mile and speed depend on ship size and type; compare them within a segment below.

Segment by segment

Efficiency only compares within a ship type. Each row gives the CO₂ per transport work of an operator's typical (median) ship, and the bar sets it against the typical ship of the whole segment: to the left of the line it emits less CO₂ for the same transport work, to the right more.

Container

CO₂ per transport work (cargo) in g CO₂/t·nm · segment median 16.3

Wilhelmsen Ahrenkiel20.7 (+27% vs median)
← bettersegment medianworse →

	Shipsin container	CO₂ per transport work (cargo)g/t·nm, median ship	vs container medianlower is better	Fuel kg/nmfleet avg.	Average speedknots at sea	Hours at seaper ship per year	CO₂ at berthshare	LNG / alt. fuelships
Wilhelmsen Ahrenkiel	20	20.7	+27%	159	13.2	2,844	2.4%	0 / 1
Segment median		16.3	0%

Bulk carrier

CO₂ per transport work (cargo) in g CO₂/t·nm · segment median 7.9

Wilhelmsen Ahrenkiel7.2 (−8% vs median)
← bettersegment medianworse →

	Shipsin bulk carrier	CO₂ per transport work (cargo)g/t·nm, median ship	vs bulk carrier medianlower is better	Fuel kg/nmfleet avg.	Average speedknots at sea	Hours at seaper ship per year	CO₂ at berthshare	LNG / alt. fuelships
Wilhelmsen Ahrenkiel	4	7.2	−8%	63	10.9	2,365	2.4%	–
Segment median		7.9	0%

Verification and monitoring

Who verifies each operator's reports, and which MRV methods its ships use to measure fuel (share of reports).

	Verifiers (ships)	A · delivery notes	B · tank monitoring	C · flow meters	D · direct
Wilhelmsen Ahrenkiel	DNV (24)	8%	96%	0%	0%

Wilhelmsen Ahrenkiel: ships furthest from their peers

Each ship's CO₂ per transport work against the median ship of its segment, as on the ship's own page. +100% means the ship emits twice as much CO₂ for the same transport work as the median ship. The cost of the gap compares each ship with ships of its size, as everywhere on the site. Ro-pax ships show passenger figures, with freight underneath.

Ship	IMO	Segment	CO₂ per transport work	Segment median	vs median	Average speed	CO₂	Allowances	Cost of gap
MAERSK WAKAYAMA	9550357	Container	44.9 g CO₂/t·nm	16.3	+176%	11.2	1,981 t	€63k	€225
MAERSK VENEZIA	9344681	Container	31.3 g CO₂/t·nm	16.3	+92%	14.6	2,944 t	€0	€0
AS FREYA	9292436	Container	27.6 g CO₂/t·nm	16.3	+69%	6.0	1,094 t	€33k	€6k
AS PENELOPE	9294537	Container	25.3 g CO₂/t·nm	16.3	+55%	16.0	2,318 t	€62k	€8k
AS CLAUDIA	9330549	Container	24.5 g CO₂/t·nm	16.3	+51%	14.6	32,239 t	€1.1m	€102k
AS CARELIA	9309409	Container	24.2 g CO₂/t·nm	16.3	+49%	15.0	32,843 t	€1.1m	€88k
AS SABRINA	9387463	Container	22.2 g CO₂/t·nm	16.3	+36%	7.7	1,013 t	€27k	€75
AS CONSTANTINA	9308390	Container	21.5 g CO₂/t·nm	16.3	+32%	10.4	13,553 t	€586k	€0
AS NINA	9401178	Container	20.8 g CO₂/t·nm	16.3	+27%	12.4	29,782 t	€1.0m	€0
DETROIT EXPRESS	9610169	Container	20.6 g CO₂/t·nm	16.3	+26%	13.4	31,351 t	€919k	€0
MAERSK GARONNEBio blend	9235579	Container	20.4 g CO₂/t·nm	16.3	+25%	12.8	15,912 t	€434k	€0
AS NURIA	9391787	Container	20.4 g CO₂/t·nm	16.3	+25%	12.6	11,653 t	€417k	€0
R SKYWALKER	9610248	Bulk carrier	9.6 g CO₂/t·nm	7.9	+22%	11.6	4,296 t	€116k	€2k
MAERSK INCHEON	9329629	Container	18.1 g CO₂/t·nm	16.3	+11%	14.0	4,523 t	€0	€0
GENOA EXPRESS	9626041	Container	17.3 g CO₂/t·nm	16.3	+6%	12.9	26,975 t	€880k	€0
LIVORNO EXPRESS	9610157	Container	16.8 g CO₂/t·nm	16.3	+3%	12.1	15,420 t	€491k	€0
BARCELONA EXPRESS	9626053	Container	16.6 g CO₂/t·nm	16.3	+2%	12.1	30,613 t	€1.0m	€0
AMILYN	9728368	Bulk carrier	7.2 g CO₂/t·nm	7.9	−8%	10.7	5,774 t	€155k	€0
AHSOKA	9669976	Bulk carrier	6.6 g CO₂/t·nm	7.9	−17%	10.7	5,328 t	€143k	€0
MAERSK STRALSUND	9303522	Container	11.3 g CO₂/t·nm	16.3	−31%	15.9	40,779 t	€0	€0
MAERSK SEOUL	9306550	Container	11.3 g CO₂/t·nm	16.3	−31%	16.7	41,121 t	€855k	€74k

30 of 24 reports shown. A high ratio can mean an older or faster-sailing ship, short trades with much time manoeuvring, or part-loaded voyages; it marks where to look first.

Notes

Companies are ISM companies (Document of Compliance holders) as named in THETIS, usually the ship manager.
Groups combine ISM companies trading under the same name, and differently named companies only where a public source shows common ownership (linked in the member list). If a company is in the wrong group, tell us at info@navalyze.com.
Efficiency figures use full-year reports with fuel; totals include part-year reports.
Euro figures use the EUA price set at the top of the page.
Verifier names vary by entity and year (for example DNV AS and DNV Hellas); they are rolled up into one brand. A verifier's figures cover the ships whose 2025 report it verified.