Navalyze · Passenger · Ship

NORWEGIAN SUN

IMO: 9218131
Type: Passenger ship
Port of registry: Nassau
Technical efficiency: EEXI 11.15 g CO₂/t·nm

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel per mile

373.3 kg/nm

Passenger median 270.1 kg/nm (+38%)

CO₂ per transport work (pax)

645

g CO₂/pax·nm · Passenger median 625 (+3%)

Average speed

15.6 kn

Passenger median 13.7 kn (+14%)

Fuel per day at sea

139.8 t/day

Fuel consumed

7,878 t

CO₂ emitted

24,868 t

Distance sailed

21,104 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,352 h

56 days, 15% of the year

Within the passenger fleet, 2023

Set against all 202 passenger ships with a full-year 2023 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 per mileThis ship 373.3 kg/nm · median 270.1 (+38%)

76.6Ranks 151 of 202, lowest first454.7

Average speedThis ship 15.6 kn · median 13.7 (+14%)

10.4Faster than 84% of passenger ships16.1

CO₂ per transport work (pax)This ship 644.51 g CO₂/pax·nm · median 625.29 (+3%)

330.27Ranks 105 of 202, lowest first1,930.62

Middle 80% of shipsMiddle 50%Passenger medianThis ship

Where the emissions happen, 2023

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 ports57%
From the EU21%
Into the EU4%
At berth in the EU18%

Fuel burned laden

–

Not reported

CO₂ at berth

18.0%

Alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

–

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel per mile, kg/nm

NORWEGIAN SUN
Passenger median

250.0300.0350.0400.0

’222022’232023

Average speed, kn

NORWEGIAN SUN
Passenger median

12.013.014.015.016.0

’222022’232023

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

NORWEGIAN SUN
Passenger median

600700800900

’222022’232023

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2022→2023	+2.5 kn	+10%	+31%	+62%	−20%	2.5 kn faster, fuel per mile up 10%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2023	not published	7,878	24,868	21,104	1,352	15.6	373.3	–	–
2022	not published	4,429	13,979	13,056	997	13.1	339.3	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/pax·nm	Passenger median	vs Passenger	Rank	Verifier	Methods
2023	not published	644.51	625.29	+3%	105 of 202	DNV	B
2022	not published	807.40	830.76	−3%	92 of 187	DNV	B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Passenger ships are benchmarked on CO₂ per transport work (pax) (TW), in g CO₂/pax·nm. CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's passenger 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.