Navalyze · Bulk carrier · Ship

ALLIS SERENE

IMO: 9425851
Type: Bulk carrier
Average cargo carried: 24,843 t
Port of registry: Panama
Technical efficiency: EEXI 4.11 g CO₂/t·nm
Former names: ETERNITY SW

ISM company (DoC holder) in 2025: SYNERGY MARITIME PRIVATE LIMITED · part of Synergy Marine

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 24,843 t of cargo on average.

Fuel kg/nm

72.8

Bulk carrier median 82.6 kg/nm (−12%)

CO₂ per transport work (cargo)

9.13

g CO₂/t·nm · Bulk carrier median 7.89 (+16%)

Average speed

8.4 kn

Bulk carrier median 10.7 kn (−21%)

Fuel per day at sea

14.7 t/day

Fuel consumed

433 t

CO₂ emitted

1,350 t

1,371 t CO₂eq incl. CH₄ and N₂O

Distance sailed

5,951 nm

CO₂ ÷ CO₂ per mile

Time at sea

707 h

29 days, 8% of the year

Within the bulk carrier fleet, 2025

Set against all 3,610 bulk carrier 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 72.8 kg/nm · median 82.6 (−12%)

61.0Ranks 1,072 of 3,610, lowest first114.1

Average speedThis ship 8.4 kn · median 10.7 (−21%)

8.8Faster than 8% of bulk carrier ships11.8

CO₂ per transport work (cargo)This ship 9.13 g CO₂/t·nm · median 7.89 (+16%)

4.80Ranks 2,325 of 3,610, lowest first15.93

Middle 80% of shipsMiddle 50%Bulk carrier 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 ports0%
From the EU26%
Into the EU71%
At berth in the EU3%

0% of this ship's CO₂ falls under the EU ETS (0 t).

Fuel burned laden

–

Not reported

CO₂ at berth

41 t

3.1% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+21 t

+1.6% CO₂eq on top of CO₂ alone, from CH₄ and N₂O; counted in full from 2026

Over the years

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

Fuel kg/nm

ALLIS SERENE
Bulk carrier median

50.075.0100.0125.0150.0175.0

’192019’222022’232023’242024’252025

Average speed, kn

ALLIS SERENE
Bulk carrier median

6.08.010.012.0

’192019’222022’232023’242024’252025

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

ALLIS SERENE
Bulk carrier median

5.06.07.08.09.010.0

’192019’222022’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−2.6 kn	−7%	−29%	−73%	+60%	2.6 kn slower, fuel per mile down 7%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+3.6 kn	−5%	+41%	+1,173%	–	3.6 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2022→2023	−1.8 kn	−50%	−60%	−57%	–	1.8 kn slower, fuel per mile down 50%; better than speed alone explains (hull, engine or trade).
2019→2022	−2.4 kn	+59%	+26%	−27%	+50%	2.4 kn slower, fuel per mile up 59%; worse than speed alone explains (fouling, weather, loading or trade).

Part-year reports are left out of these comparisons. 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
2025part-year	SYNERGY MARITIME PRIVATE LIMITED	433	1,350	5,951	707	8.4	72.8	9.13	–
2025	Synergy Marine Shanghai Ltd	433	1,350	5,951	707	8.4	72.8	9.13	–
2024	SYNERGY MARITIME PRIVATE LIMITED	1,738	5,447	22,153	2,017	11.0	78.5	5.72	–
2023	not published	144	452	1,740	235	7.4	82.7	–	–
2022	not published	658	2,078	4,005	434	9.2	164.2	9.47	90%
2019	not published	567	1,771	5,500	474	11.6	103.2	6.30	93%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Bulk carrier median	vs Bulk carrier	Rank	Verifier	Methods
2025part-year	SYNERGY MARITIME PRIVATE LIMITED	–	–	–	–	ClassNK	A
2025	Synergy Marine Shanghai Ltd	9.13	7.89	+16%	2,325 of 3,610	ClassNK	A+C
2024	SYNERGY MARITIME PRIVATE LIMITED	5.72	8.09	−29%	590 of 3,089	ClassNK	A
2023	not published	–	–	–	–	ClassNK	A
2022	not published	9.47	8.71	+9%	2,301 of 3,968	ClassNK	A
2019	not published	6.30	8.38	−25%	806 of 3,360	ClassNK	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Bulk carrier 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 bulk carrier 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.