Navalyze · Ro-pax · Ship

KING SEAWAYS

IMO: 8502406
Type: Ro-pax ship
Flag (estimated): Denmark
Port of registry: Copenhagen
Technical efficiency: EEXI 29.67 g CO₂/t·nm
Fuel (estimated): Oil blended with biofuel or another alternative fuel

ISM company (DoC holder) in 2025: DFDS A/S · part of DFDS

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 1,053 t of cargo on average.

Fuel kg/nm

172

Ro-pax median 158 kg/nm (+8%)

CO₂ per transport work (pax)

591

g CO₂/pax·nm · Ro-pax median 729 (−19%)

CO₂ per transport work (freight)

–

g CO₂/t·nm

Average speed

15.6 kn

Ro-pax median 16.1 kn (−3%)

Fuel per day at sea

64.2 t/day

Fuel consumed

16,263 t

CO₂ emitted

50,671 t

Distance sailed

94,712 nm

CO₂ ÷ CO₂ per mile

Time at sea

6,078 h

253 days, 69% of the year

Within the ro-pax fleet, 2025

Set against all 408 ro-pax ships with a full-year 2025 report. Bigger ships burn more per mile but less per tonne of cargo, so read fuel per mile with the ship's size in mind.

Fuel kg/nmThis ship 155 kg/nm · median 150 (+3%)

69.3Ranks 218 of 408, lowest first232

Average speedThis ship 16.1 kn · median 15.8 (+2%)

12.0Faster than 54% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 147 g CO₂/pax·nm · median 567 (−74%)

66.8Ranks 105 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 395 g CO₂/t·nm · median 253 (+56%)

48.6Ranks 248 of 408, lowest first1,247

Middle 80% of shipsMiddle 50%Ro-pax medianThis ship

Where the emissions happen, 2018

THETIS splits each ship's CO₂ by voyage type. The split sets how much falls under the EU ETS: all of it within the EU and at berth, half of it on voyages into or out of the EU.

Between EU ports93%
From the EU0%
Into the EU0%
At berth in the EU7%

Fuel burned laden

–

Not reported

CO₂ at berth

3,441 t

6.8% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

Over the years

Full-year reports only. The Ro-pax median is the middle ship of all ro-pax ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

KING SEAWAYS
Ro-pax median

140.0150.0160.0170.0180.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

KING SEAWAYS
Ro-pax median

15.615.816.016.2

’182018’192019’202020’212021’222022’232023’242024’252025

CO₂ per transport work (freight), g CO₂/t·nm

KING SEAWAYS
Ro-pax median

100200300400500

’192019’202020’212021’222022’232023’242024’252025

CO₂ per transport work (pax), g CO₂/pax·nm

KING SEAWAYS
Ro-pax median

0.01,0002,0003,0004,0005,000

’182018’192019’202020’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.1 kn	+6%	+6%	+6%	+6%	Same speed, fuel per mile up 6%; in line with the speed change.
2023→2024	−0.1 kn	−3%	−3%	−3%	−2%	Same speed, fuel per mile down 3%; in line with the speed change.
2022→2023	−0.1 kn	+0%	−1%	+7%	−69%	Same speed, fuel per mile flat.
2021→2022	+0.1 kn	−2%	−1%	−8%	−89%	Same speed, fuel per mile down 2%; in line with the speed change.
2020→2021	−0.1 kn	−13%	−14%	+46%	+153%	Same speed, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2019→2020	+0.0 kn	+11%	+11%	−30%	+318%	Same speed, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.6 kn	−7%	−3%	−5%	−35%	0.6 kn faster, fuel per mile down 7%; better than speed alone explains (hull, engine or trade).

Fuel per mile rises roughly with the square of speed for a given ship, so a change in speed explains much of a change in fuel per mile.

Every reporting year

One row per THETIS-MRV report. A ship that changed operator during a year has a part-year report for each.

Operation

Year	ISM company	Fuel t	CO₂ t	Distance nm	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025Bio blend	DFDS A/S	14,386	43,917	93,140	5,802	16.1	155	–	–
2024	DFDS A/S	12,863	40,549	88,084	5,504	16.0	146	–	–
2023	not published	13,630	41,861	90,467	5,631	16.1	151	–	–
2022	not published	12,759	39,743	84,799	5,219	16.2	151	–	–
2021	not published	14,121	45,114	91,765	5,709	16.1	154	–	–
2020	not published	11,152	34,773	62,816	3,882	16.2	178	–	–
2019	not published	14,411	44,900	90,322	5,565	16.2	160	–	–
2018	not published	16,263	50,671	94,712	6,078	15.6	172	508	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/pax·nm	Ro-pax median	vs Ro-pax	Rank	Freight, g CO₂/t·nm	Ro-pax median	vs Ro-pax	Verifier	Methods
2025Bio blend	DFDS A/S	147	567	−74%	105 of 408	395	253	+56%	DNV	B
2024	DFDS A/S	139	547	−75%	108 of 404	415	233	+78%	DNV	C
2023	not published	141	680	−79%	74 of 386	377	234	+61%	DNV	C
2022	not published	452	626	−28%	163 of 394	129	253	−49%	DNV	C
2021	not published	4,048	815	+397%	365 of 377	160	226	−29%	Verifavia	C
2020	not published	1,602	751	+113%	299 of 387	154	217	−29%	Verifavia	C
2019	not published	383	569	−33%	145 of 394	126	223	−43%	Verifavia	C
2018	not published	591	729	−19%	161 of 361	–	–	–	Verifavia	C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Ro-pax ships are benchmarked on CO₂ per transport work (pax) (TW), in g CO₂/pax·nm, and also per tonne of freight (g CO₂/t·nm freight). CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's ro-pax ships. Methods: A delivery notes, B tank monitoring, C flow meters, D direct measurement. FuelEU GHG intensity is not shown: it needs fuel types, which the public file does not carry. Operators are named only from 2024, the first year the public files carry them; earlier years belong to the ship, not to any company.