Navalyze · Chemical tanker · Ship

PROTEUS

IMO: 9864368
Type: Chemical tanker
Average cargo carried: 24,112 t
Port of registry: Majuro
Technical efficiency: EEXI 4.19 g CO₂/t·nm

ISM company (DoC holder) in 2025: Empire Navigation Inc

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 24,112 t of cargo on average.

Fuel kg/nm

100.8

Chemical tanker median 79.7 kg/nm (+26%)

CO₂ per transport work (cargo)

13.17

g CO₂/t·nm · Chemical tanker median 15.04 (−12%)

Average speed

10.9 kn

Chemical tanker median 11.1 kn (−2%)

Fuel per day at sea

26.3 t/day

Fuel consumed

622 t

CO₂ emitted

1,959 t

1,989 t CO₂eq incl. CH₄ and N₂O

Distance sailed

6,168 nm

CO₂ ÷ CO₂ per mile

Time at sea

567 h

24 days, 6% of the year

Within the chemical tanker fleet, 2025

Set against all 1,460 chemical tanker 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 100.8 kg/nm · median 79.7 (+26%)

52.8Ranks 1,186 of 1,460, lowest first111.0

Average speedThis ship 10.9 kn · median 11.1 (−2%)

8.8Faster than 44% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 13.17 g CO₂/t·nm · median 15.04 (−12%)

7.93Ranks 596 of 1,460, lowest first40.17

Middle 80% of shipsMiddle 50%Chemical tanker 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 ports52%
From the EU36%
Into the EU5%
At berth in the EU8%

46% of this ship's CO₂ falls under the EU ETS (901 t).

Fuel burned laden

–

Not reported

CO₂ at berth

7.9%

Alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq ÷ CO₂

1.015

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel kg/nm

PROTEUS
Chemical tanker median

75.0100.0125.0150.0175.0

’202020’212021’222022’232023’252025

Average speed, kn

PROTEUS
Chemical tanker median

10.010.511.011.5

’202020’212021’222022’232023’252025

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

PROTEUS
Chemical tanker median

0.010.020.030.040.0

’202020’212021’222022’232023’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2023→2025	−0.2 kn	−41%	−42%	−24%	−63%	Same speed, fuel per mile down 41%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.0 kn	+38%	+38%	−22%	+238%	Same speed, fuel per mile up 38%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.1 kn	+52%	+53%	−8%	−22%	Same speed, fuel per mile up 52%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.9 kn	−18%	−10%	−74%	+37%	0.9 kn faster, fuel per mile down 18%; 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	Empire Navigation Inc	622	1,959	6,168	567	10.9	100.8	13.17	–
2023	not published	1,382	4,321	8,146	737	11.1	169.7	35.22	–
2022	not published	1,276	4,002	10,406	936	11.1	122.7	10.43	–
2021	not published	915	2,856	11,309	1,026	11.0	80.9	13.45	–
2020	not published	4,241	13,264	42,821	4,260	10.1	99.0	9.82	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	Empire Navigation Inc	13.17	15.04	−12%	596 of 1,460	DNV	B
2023	not published	35.22	16.23	+117%	1,099 of 1,314	Lloyd's Register	B
2022	not published	10.43	16.06	−35%	255 of 1,409	DNV	B
2021	not published	13.45	16.69	−19%	447 of 1,343	DNV	B
2020	not published	9.82	16.16	−39%	167 of 1,312	ABS	B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Chemical tanker 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 chemical tanker 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.