Navalyze · Bulk carrier · Ship

NANA LEEN

IMO: 9113850
Type: Bulk carrier
Average cargo carried: 11,882 t
Flag (estimated): Sierra Leone
Port of registry: Freetown
Technical efficiency: EIV 6.10 g CO₂/t·nm

ISM company (DoC holder) in 2025: AMSON MARINE LTD

Report year

2020 at a glance

From the 2020 THETIS-MRV report. Carries about 17,270 t of cargo on average.

Fuel kg/nm

72.2

Bulk carrier median 86.5 kg/nm (−17%)

CO₂ per transport work (cargo)

13.2

g CO₂/t·nm · Bulk carrier median 8.24 (+60%)

Average speed

6.1 kn

Bulk carrier median 11.1 kn (−45%)

Fuel per day at sea

10.6 t/day

Fuel consumed

587 t

CO₂ emitted

1,854 t

Distance sailed

8,138 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,331 h

55 days, 15% 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 63.3 kg/nm · median 82.6 (−23%)

61.0Ranks 484 of 3,611, lowest first114

Average speedThis ship 8.8 kn · median 10.7 (−18%)

8.8Faster than 10% of bulk carrier ships11.8

CO₂ per transport work (cargo)This ship 16.8 g CO₂/t·nm · median 7.90 (+113%)

4.80Ranks 3,290 of 3,611, lowest first15.9

Middle 80% of shipsMiddle 50%Bulk carrier medianThis ship

Where the emissions happen, 2020

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 ports0%
From the EU37%
Into the EU59%
At berth in the EU4%

Fuel burned laden

–

Not reported

CO₂ at berth

75 t

4.0% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

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

NANA LEEN
Bulk carrier median

0.0100.0200.0300.0400.0500.0

’182018’192019’202020’212021’222022’242024’252025

Average speed, kn

NANA LEEN
Bulk carrier median

6.08.010.012.0

’182018’192019’202020’212021’222022’242024’252025

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

NANA LEEN
Bulk carrier median

0.025.050.075.0100

’182018’192019’202020’212021’222022’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.6 kn	+6%	−1%	−79%	+24%	0.6 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2024	+1.6 kn	−86%	−83%	+1,501%	−85%	1.6 kn faster, fuel per mile down 86%; better than speed alone explains (hull, engine or trade).
2021→2022	−1.4 kn	+617%	+501%	−71%	+273%	1.4 kn slower, fuel per mile up 617%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+3.1 kn	−17%	+25%	−34%	+80%	3.1 kn faster, fuel per mile down 17%; better than speed alone explains (hull, engine or trade).
2019→2020	−4.1 kn	+20%	−28%	+99%	+28%	4.1 kn slower, fuel per mile up 20%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.6 kn	−10%	−4%	−43%	−30%	0.6 kn faster, fuel per mile down 10%; 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	AMSON MARINE LTD	326	1,029	5,145	587	8.8	63.3	16.8	21%
2024	AMSON MARINE LTD	1,498	4,731	25,032	2,659	9.4	59.8	13.6	–
2022	not published	670	2,112	1,564	201	7.8	428	88.6	–
2021	not published	323	1,021	5,408	585	9.2	59.7	23.7	–
2020	not published	587	1,854	8,138	1,331	6.1	72.2	13.2	–
2019	not published	246	769	4,096	401	10.2	60.1	10.3	–
2018	not published	478	1,492	7,168	749	9.6	66.6	14.7	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Bulk carrier median	vs Bulk carrier	Rank	Verifier	Methods
2025	AMSON MARINE LTD	16.8	7.90	+113%	3,290 of 3,611	Dromon Bureau of Shipping	A
2024	AMSON MARINE LTD	13.6	8.09	+68%	2,660 of 3,089	Dromon Bureau of Shipping	A
2022	not published	88.6	8.71	+917%	3,964 of 3,968	Dromon Bureau of Shipping	A
2021	not published	23.7	8.57	+177%	3,369 of 3,466	Dromon Bureau of Shipping	A
2020	not published	13.2	8.24	+60%	2,715 of 3,150	Dromon Bureau of Shipping	A
2019	not published	10.3	8.38	+23%	2,328 of 3,360	Dromon Bureau of Shipping	A
2018	not published	14.7	8.50	+73%	2,975 of 3,384	Dromon Bureau of Shipping	–

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.