Navalyze · Bulk carrier · Ship

NESTOR S

IMO: 9473341
Type: Bulk carrier
Average cargo carried: 5,546 t
Flag (estimated): Greece
Port of registry: Piraeus
Technical efficiency: EEXI 3.64 g CO₂/t·nm
Former names: CAPTAIN TASSOS D

ISM company (DoC holder) in 2025: MANTINIA SHIPPING COMPANY S.A.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 5,546 t of cargo on average.

Fuel kg/nm

154

Bulk carrier median 82.6 kg/nm (+87%)

CO₂ per transport work (cargo)

87.3

g CO₂/t·nm · Bulk carrier median 7.90 (+1,005%)

Average speed

6.6 kn

Bulk carrier median 10.7 kn (−38%)

Fuel per day at sea

24.6 t/day

Fuel consumed

636 t

CO₂ emitted

1,995 t

2,026 t CO₂eq incl. CH₄ and N₂O

Distance sailed

4,119 nm

CO₂ ÷ CO₂ per mile

Time at sea

621 h

26 days, 7% of the year

Within the bulk carrier fleet, 2025

Set against all 3,611 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 154 kg/nm · median 82.6 (+87%)

61.0Ranks 3,503 of 3,611, lowest first114

Average speedThis ship 6.6 kn · median 10.7 (−38%)

8.8Faster than 2% of bulk carrier ships11.8

CO₂ per transport work (cargo)This ship 87.3 g CO₂/t·nm · median 7.90 (+1,005%)

4.80Ranks 3,564 of 3,611, lowest first15.9

Middle 80% of shipsMiddle 50%Bulk carrier 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 ports11%
From the EU67%
Into the EU4%
At berth in the EU18%

65% of this ship's CO₂ falls under the EU ETS (1,293 t).

Fuel burned laden

–

Not reported

CO₂ at berth

368 t

18.4% 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

+31 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

NESTOR S
Bulk carrier median

80.0100.0120.0140.0160.0

’182018’192019’202020’232023’242024’252025

Average speed, kn

NESTOR S
Bulk carrier median

6.08.010.012.014.0

’182018’192019’202020’232023’242024’252025

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

NESTOR S
Bulk carrier median

0.025.050.075.0100

’182018’192019’202020’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−3.4 kn	+57%	+4%	−16%	+1,570%	3.4 kn slower, fuel per mile up 57%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.8 kn	−24%	−29%	−34%	−50%	0.8 kn slower, fuel per mile down 24%; better than speed alone explains (hull, engine or trade).
2020→2023	−1.4 kn	+42%	+26%	−52%	+95%	1.4 kn slower, fuel per mile up 42%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.0 kn	−4%	+4%	−37%	−12%	1.0 kn faster, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2018→2019	+2.3 kn	−13%	+10%	+147%	−49%	2.3 kn faster, fuel per mile down 13%; 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	MANTINIA SHIPPING COMPANY S.A.	636	1,995	4,119	621	6.6	154	87.3	–
2024	MANTINIA SHIPPING COMPANY S.A.	482	1,519	4,897	489	10.0	98.5	5.23	–
2023	not published	963	3,038	7,460	691	10.8	129	10.5	–
2020	not published	1,424	4,472	15,623	1,284	12.2	91.1	5.37	–
2019	not published	2,356	7,354	24,758	2,212	11.2	95.2	6.07	–
2018	not published	1,094	3,424	10,042	1,130	8.9	109	11.8	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Bulk carrier median	vs Bulk carrier	Rank	Verifier	Methods
2025	MANTINIA SHIPPING COMPANY S.A.	87.3	7.90	+1,005%	3,564 of 3,611	DNV	A+C
2024	MANTINIA SHIPPING COMPANY S.A.	5.23	8.09	−35%	423 of 3,089	DNV	A+C
2023	not published	10.5	8.27	+27%	2,473 of 3,548	DNV	A+C
2020	not published	5.37	8.24	−35%	394 of 3,150	Lloyd's Register	B
2019	not published	6.07	8.38	−28%	702 of 3,360	Lloyd's Register	B
2018	not published	11.8	8.50	+39%	2,643 of 3,384	Lloyd's Register	B

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.