Navalyze · Oil tanker · Ship

COPENHAGEN STAR

IMO: 9995985
Type: Oil tanker
Average cargo carried: 60,195 t
Flag (estimated): Marshall Islands
Port of registry: Majuro
Technical efficiency: EEDI 2.77 g CO₂/t·nm

ISM company (DoC holder) in 2025: Atlas Maritime Shipmanagement Ltd

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 60,195 t of cargo on average.

Fuel kg/nm

150

Oil tanker median 129 kg/nm (+17%)

CO₂ per transport work (cargo)

7.88

g CO₂/t·nm · Oil tanker median 7.95 (−1%)

Average speed

10.0 kn

Oil tanker median 10.7 kn (−7%)

Fuel per day at sea

35.9 t/day

Fuel consumed

2,063 t

CO₂ emitted

6,523 t

6,624 t CO₂eq incl. CH₄ and N₂O

Distance sailed

13,752 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,377 h

57 days, 16% of the year

Within the oil tanker fleet, 2025

Set against all 1,665 oil 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 150 kg/nm · median 129 (+17%)

76.1Ranks 1,184 of 1,665, lowest first191

Average speedThis ship 10.0 kn · median 10.7 (−7%)

8.0Faster than 30% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 7.88 g CO₂/t·nm · median 7.95 (−1%)

4.51Ranks 818 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports3%
From the EU58%
Into the EU26%
At berth in the EU13%

58% of this ship's CO₂ falls under the EU ETS (3,812 t).

Fuel burned laden

–

Not reported

CO₂ at berth

856 t

13.1% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+101 t

+1.5% CO₂eq on top of CO₂ alone, from CH₄ and N₂O; counted in full from 2026

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	Atlas Maritime Shipmanagement Ltd	2,063	6,523	13,752	1,377	10.0	150	7.88	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Atlas Maritime Shipmanagement Ltd	7.88	7.95	−1%	818 of 1,665	ABS	A

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