Navalyze · Combination · Ship

ZEFIREA

IMO: 9607643
Type: Combination carrier
Average cargo carried: 22,156 t
Port of registry: Genova
Technical efficiency: EIV 7.79 g CO₂/t·nm

ISM company (DoC holder) in 2025: CALISA - CARICHI LIQUIDI SOCIETA ARMATORIALE SPA

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 22,156 t of cargo on average.

Fuel per mile

101.5 kg/nm

Combination median 104.1 kg/nm (−2%)

CO₂ per transport work (cargo)

14.51

g CO₂/t·nm · Combination median 18.14 (−20%)

Average speed

10.5 kn

Combination median 10.5 kn (+0%)

Fuel per day at sea

25.5 t/day

Fuel consumed

2,990 t

CO₂ emitted

9,474 t

9,620 t CO₂eq incl. CH₄ and N₂O

Distance sailed

29,468 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,816 h

117 days, 32% of the year

Within the combination fleet, 2025

Set against all 4 combination 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 per mileThis ship 101.5 kg/nm · median 104.1 (−2%)

89.1Ranks 2 of 4, lowest first108.5

Average speedThis ship 10.5 kn · median 10.5 (+0%)

9.8Faster than 25% of combination ships11.9

CO₂ per transport work (cargo)This ship 14.51 g CO₂/t·nm · median 18.14 (−20%)

7.22Ranks 2 of 4, lowest first25.66

Middle 80% of shipsMiddle 50%Combination medianThis ship

Where the emissions happen, 2025

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 ports51%
From the EU26%
Into the EU14%
At berth in the EU9%

80% of this ship's CO₂ falls under the EU ETS (7,591 t).

Fuel burned laden

–

Not reported

CO₂ at berth

9.2%

Alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.015

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel per mile, kg/nm

ZEFIREA
Combination median

80.090.0100.0110.0120.0

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

Average speed, kn

ZEFIREA
Combination median

6.08.010.012.0

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

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

ZEFIREA
Combination median

0.020.040.060.080.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−1.2 kn	+2%	−9%	+11%	−47%	1.2 kn slower, fuel per mile up 2%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+0.6 kn	−15%	−10%	+51%	+12%	0.6 kn faster, fuel per mile down 15%; better than speed alone explains (hull, engine or trade).
2022→2023	+1.4 kn	+1%	+16%	−53%	+7%	1.4 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2021→2022	−0.6 kn	+4%	−1%	+10%	+22%	0.6 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.9 kn	−6%	+2%	+4%	−28%	0.9 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2019→2020	+2.1 kn	+4%	+34%	−24%	+25%	2.1 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.8 kn	+4%	−6%	+22%	+13%	0.8 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading 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
2025	CALISA - CARICHI LIQUIDI SOCIETA ARMATORIALE SPA	2,990	9,474	29,468	2,816	10.5	101.5	14.51	–
2024	CALISA - CARICHI LIQUIDI SOCIETA ARMATORIALE SPA	2,619	8,216	26,435	2,257	11.7	99.1	27.36	–
2023	not published	2,035	6,405	17,517	1,583	11.1	116.2	24.45	–
2022	not published	4,296	13,459	37,488	3,864	9.7	114.6	22.82	–
2021	not published	3,758	11,773	34,089	3,323	10.3	110.2	18.76	–
2020	not published	3,853	12,061	32,907	3,492	9.4	117.1	25.96	–
2019	not published	4,863	17,104	43,176	5,908	7.3	112.6	20.82	100%
2018	not published	3,827	12,028	35,489	4,384	8.1	107.8	18.47	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Combination median	vs Combination	Rank	Verifier	Methods
2025	CALISA - CARICHI LIQUIDI SOCIETA ARMATORIALE SPA	14.51	18.14	−20%	2 of 4	RINA	A+B
2024	CALISA - CARICHI LIQUIDI SOCIETA ARMATORIALE SPA	27.36	21.51	+27%	6 of 9	RINA	A+B
2023	not published	24.45	24.45	+0%	3 of 5	RINA	A+B
2022	not published	22.82	13.90	+64%	5 of 7	RINA	A+B
2021	not published	18.76	21.25	−12%	2 of 4	RINA	–
2020	not published	25.96	25.96	+0%	8 of 15	RINA	A+B
2019	not published	20.82	67.09	−69%	3 of 10	ABS	A+B
2018	not published	18.47	20.50	−10%	3 of 9	RINA	A+B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Combination 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 combination 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.