Navalyze · Chemical tanker · Ship

OWL 4

IMO: 9435557
Type: Chemical tanker
Average cargo carried: 93 t
Port of registry: Majuro
Technical efficiency: EEXI 10.58 g CO₂/t·nm
Former names: CAMDEN

ISM company (DoC holder) in 2025: INTERUNITY MANAGEMENT CORPORATION SA

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 93 t of cargo on average.

Fuel per mile

77.9 kg/nm

CO₂ per transport work (cargo)

2,618

g CO₂/t·nm

Average speed

8.0 kn

Fuel per day at sea

14.9 t/day

Fuel consumed

929 t

CO₂ emitted

2,912 t

2,957 t CO₂eq incl. CH₄ and N₂O

Distance sailed

11,921 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,495 h

62 days, 17% of the year

Within the chemical tanker fleet, 2024

Set against all 1,274 chemical tanker ships with a full-year 2024 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 52.4 kg/nm · median 80.8 (−35%)

53.8Ranks 107 of 1,274, lowest first110.8

Average speedThis ship 11.2 kn · median 11.0 (+2%)

8.7Faster than 56% of chemical tanker ships12.5

CO₂ per transport work (cargo)This ship 28.99 g CO₂/t·nm · median 16.73 (+73%)

8.47Ranks 968 of 1,274, lowest first41.97

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 ports11%
From the EU36%
Into the EU30%
At berth in the EU23%

42% of this ship's CO₂ falls under the EU ETS (1,214 t).

Fuel burned laden

65%

35% in ballast or unladen

CO₂ at berth

23.2%

Alongside in EU ports

Methane (CH₄)

0.1 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 per mile, kg/nm

OWL 4
Chemical tanker median

50.060.070.080.090.0100.0

’182018’212021’222022’242024’252025

Average speed, kn

OWL 4
Chemical tanker median

6.08.010.012.014.0

’182018’212021’222022’242024’252025

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

OWL 4
Chemical tanker median

0.020.040.060.080.0

’182018’212021’222022’242024

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−3.2 kn	+49%	+6%	+38%	–	3.2 kn slower, fuel per mile up 49%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2024	+0.8 kn	−14%	−8%	−6%	−25%	0.8 kn faster, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2021→2022	−1.9 kn	+14%	−3%	−12%	−51%	1.9 kn slower, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2021	+5.9 kn	−18%	+58%	−54%	+145%	5.9 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	INTERUNITY MANAGEMENT CORPORATION SA	929	2,912	11,921	1,495	8.0	77.9	2,618.28	65%
2024	INTERUNITY MANAGEMENT CORPORATION SA	452	1,424	8,628	768	11.2	52.4	28.99	–
2022	not published	561	1,760	9,160	878	10.4	61.2	38.47	–
2021	not published	555	1,735	10,378	842	12.3	53.5	78.44	–
2018	not published	1,463	4,590	22,422	3,528	6.4	65.3	32.02	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	INTERUNITY MANAGEMENT CORPORATION SA	–	–	–	–	ICS Verification Services	A
2024	INTERUNITY MANAGEMENT CORPORATION SA	28.99	16.73	+73%	968 of 1,274	ICS Verification Services	A
2022	not published	38.47	16.06	+140%	1,241 of 1,409	ICS Verification Services	A
2021	not published	78.44	16.69	+370%	1,332 of 1,343	EMICERT	A
2018	not published	32.02	17.14	+87%	1,047 of 1,294	DNV	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.