Navalyze · Passenger · Ship

NORWEGIAN GEM

IMO: 9355733
Type: Passenger ship
Port of registry: Nassau
Technical efficiency: EEXI 10.33 g CO₂/t·nm

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel per mile

407.0 kg/nm

Passenger median 270.1 kg/nm (+51%)

CO₂ per transport work (pax)

568

g CO₂/pax·nm · Passenger median 625 (−9%)

Average speed

16.0 kn

Passenger median 13.7 kn (+17%)

Fuel per day at sea

156.6 t/day

Fuel consumed

21,271 t

CO₂ emitted

66,505 t

Distance sailed

52,257 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,259 h

136 days, 37% 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 407.0 kg/nm · median 270.1 (+51%)

76.6Ranks 168 of 202, lowest first454.7

Average speedThis ship 16.0 kn · median 13.7 (+17%)

10.4Faster than 88% of passenger ships16.1

CO₂ per transport work (pax)This ship 568.18 g CO₂/pax·nm · median 625.29 (−9%)

330.27Ranks 96 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 ports55%
From the EU12%
Into the EU12%
At berth in the EU20%

Fuel burned laden

–

Not reported

CO₂ at berth

20.3%

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 GEM
Passenger median

250.0300.0350.0400.0450.0

’222022’232023

Average speed, kn

NORWEGIAN GEM
Passenger median

12.013.014.015.016.0

’222022’232023

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

NORWEGIAN GEM
Passenger median

500600700800900

’222022’232023

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2022→2023	+0.3 kn	−5%	−2%	−16%	−32%	0.3 kn faster, fuel per mile down 5%; 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	21,271	66,505	52,257	3,259	16.0	407.0	–	–
2022	not published	26,422	82,967	61,929	3,949	15.7	426.6	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/pax·nm	Passenger median	vs Passenger	Rank	Verifier	Methods
2023	not published	568.18	625.29	−9%	96 of 202	DNV	B
2022	not published	830.76	830.76	+0%	94 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.