Navalyze · Container · Ship

SL TWEETY

IMO: 9246322
Type: Container ship
Average cargo carried: 10,384 t
Port of registry: Monrovia
Technical efficiency: EIV 18.84 g CO₂/t·nm
Former names: PUCCINI

Report year

2022 at a glance

From the 2022 THETIS-MRV report. Carries about 10,384 t of cargo on average.

Fuel per mile

128.0 kg/nm

Container median 177.5 kg/nm (−28%)

CO₂ per transport work (cargo)

38.86

g CO₂/t·nm · Container median 19.13 (+103%)

Average speed

14.3 kn

Container median 13.6 kn (+5%)

Fuel per day at sea

43.8 t/day

Fuel consumed

278 t

CO₂ emitted

878 t

Distance sailed

2,177 nm

CO₂ ÷ CO₂ per mile

Time at sea

153 h

6 days, 2% of the year

Within the container fleet, 2022

Set against all 1,825 container ships with a full-year 2022 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 128.0 kg/nm · median 177.5 (−28%)

77.9Ranks 641 of 1,825, lowest first313.7

Average speedThis ship 14.3 kn · median 13.6 (+5%)

10.1Faster than 62% of container ships16.1

CO₂ per transport work (cargo)This ship 38.86 g CO₂/t·nm · median 19.13 (+103%)

7.44Ranks 1,469 of 1,825, lowest first52.60

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2022

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 ports0%
From the EU59%
Into the EU39%
At berth in the EU1%

Fuel burned laden

–

Not reported

CO₂ at berth

1.4%

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 Container median is the middle ship of all container ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

SL TWEETY
Container median

100.0120.0140.0160.0180.0200.0

’182018’212021’222022

Average speed, kn

SL TWEETY
Container median

8.010.012.014.016.0

’182018’212021’222022

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

SL TWEETY
Container median

10.020.030.040.0

’182018’212021’222022

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2021→2022	−1.0 kn	−7%	−14%	−90%	+12%	1.0 kn slower, fuel per mile down 7%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2021	+5.9 kn	+25%	+104%	+44%	+137%	5.9 kn faster, fuel per mile up 25%; 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
2022	not published	278	878	2,177	153	14.3	128.0	38.86	–
2021	not published	2,873	9,068	20,805	1,356	15.3	138.1	34.57	–
2018	not published	1,593	4,961	14,415	1,527	9.4	110.5	14.60	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2022	not published	38.86	19.13	+103%	1,469 of 1,825	DNV	A
2021	not published	34.57	17.90	+93%	1,403 of 1,781	DNV	A
2018	not published	14.60	20.22	−28%	529 of 1,705	Verifavia	B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Container ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·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 container 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.