Navalyze · Bulk carrier · Ship

STAR GROTON

IMO: 9575242
Type: Bulk carrier
Average cargo carried: 35,633 t
Port of registry: Monrovia
Technical efficiency: EEXI 3.89 g CO₂/t·nm
Former names: GROTON EAGLE

ISM company (DoC holder) in 2025: Megara Ship Management Ltd

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 35,633 t of cargo on average.

Fuel per mile

81.7 kg/nm

Bulk carrier median 82.6 kg/nm (−1%)

CO₂ per transport work (cargo)

7.16

g CO₂/t·nm · Bulk carrier median 7.89 (−9%)

Average speed

10.9 kn

Bulk carrier median 10.7 kn (+2%)

Fuel per day at sea

21.5 t/day

Fuel consumed

1,067 t

CO₂ emitted

3,333 t

3,385 t CO₂eq incl. CH₄ and N₂O

Distance sailed

13,062 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,193 h

50 days, 14% 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 per mileThis ship 81.7 kg/nm · median 82.6 (−1%)

61.0Ranks 1,733 of 3,610, lowest first114.1

Average speedThis ship 10.9 kn · median 10.7 (+2%)

8.8Faster than 62% of bulk carrier ships11.8

CO₂ per transport work (cargo)This ship 7.16 g CO₂/t·nm · median 7.89 (−9%)

4.80Ranks 1,458 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 ports10%
From the EU11%
Into the EU76%
At berth in the EU3%

7% of this ship's CO₂ falls under the EU ETS (245 t).

Fuel burned laden

–

Not reported

CO₂ at berth

3.0%

Alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift 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 per mile, kg/nm

STAR GROTON
Bulk carrier median

80.085.090.095.0100.0

’182018’192019’202020’232023’252025

Average speed, kn

STAR GROTON
Bulk carrier median

10.011.012.013.014.0

’182018’192019’202020’232023’252025

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

STAR GROTON
Bulk carrier median

5.06.07.08.09.0

’192019’202020’232023’252025

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2023→2025	+0.1 kn	−6%	−5%	+2%	−14%	Same speed, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2020→2023	−0.9 kn	−12%	−18%	−1%	+42%	0.9 kn slower, fuel per mile down 12%; in line with the speed change.
2019→2020	−1.4 kn	+13%	+0%	−44%	−13%	1.4 kn slower, fuel per mile up 13%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	–	–	–	–	–

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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025part-year	Megara Ship Management Ltd	931	2,906	11,713	1,069	11.0	79.5	6.24	–
2025part-year	Megara Ship Management Ltd	0	0	–	0	–	–	–	–
2025	Iblea Ship Management Ltd	1,067	3,333	13,062	1,193	10.9	81.7	7.16	–
2023	not published	1,113	3,487	12,747	1,175	10.8	87.3	8.37	–
2020	not published	1,283	4,003	12,917	1,108	11.7	99.3	5.91	–
2019	not published	2,022	6,320	23,010	1,753	13.1	87.9	6.78	–
2018	not published	0	0	–	0	–	–	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Bulk carrier median	vs Bulk carrier	Rank	Verifier	Methods
2025part-year	Megara Ship Management Ltd	–	–	–	–	DNV	A+B+C
2025part-year	Megara Ship Management Ltd	–	–	–	–	DNV	A+B+C
2025	Iblea Ship Management Ltd	7.16	7.89	−9%	1,458 of 3,610	DNV	A+B+C
2023	not published	8.37	8.27	+1%	1,813 of 3,548	DNV	C
2020	not published	5.91	8.24	−28%	592 of 3,150	Verifavia	C
2019	not published	6.78	8.38	−19%	1,008 of 3,360	Verifavia	C
2018	not published	–	–	–	–	Verifavia	–

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.