Navalyze · Oil tanker · Ship

BALOS

IMO: 9323560
Type: Oil tanker
Average cargo carried: 5,276 t
Port of registry: Monrovia
Technical efficiency: EEXI 5.52 g CO₂/t·nm
Former names: LEON HERMES

ISM company (DoC holder) in 2025: SPRING MARINE MANAGEMENT S.A.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 5,276 t of cargo on average.

Fuel per mile

88.6 kg/nm

Oil tanker median 128.5 kg/nm (−31%)

CO₂ per transport work (cargo)

53.29

g CO₂/t·nm · Oil tanker median 7.95 (+570%)

Average speed

8.9 kn

Oil tanker median 10.7 kn (−17%)

Fuel per day at sea

19.0 t/day

Fuel consumed

878 t

CO₂ emitted

2,786 t

2,829 t CO₂eq incl. CH₄ and N₂O

Distance sailed

9,909 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,112 h

46 days, 13% 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 per mileThis ship 88.6 kg/nm · median 128.5 (−31%)

76.1Ranks 296 of 1,665, lowest first190.8

Average speedThis ship 8.9 kn · median 10.7 (−17%)

8.0Faster than 16% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 53.29 g CO₂/t·nm · median 7.95 (+570%)

4.51Ranks 1,617 of 1,665, lowest first27.66

Middle 80% of shipsMiddle 50%Oil 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 ports0%
From the EU74%
Into the EU20%
At berth in the EU6%

53% of this ship's CO₂ falls under the EU ETS (1,479 t).

Fuel burned laden

–

Not reported

CO₂ at berth

6.2%

Alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.015

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

Full-year reports only. The Oil tanker median is the middle ship of all oil 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

BALOS
Oil tanker median

50.0100.0150.0200.0250.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

BALOS
Oil tanker median

2.55.07.510.012.515.0

’182018’192019’202020’212021’222022’232023’242024’252025

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

BALOS
Oil tanker median

0.020.040.060.0

’182018’192019’202020’212021’222022’232023’242024’252025

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−0.5 kn	−12%	−16%	−47%	+206%	0.5 kn slower, fuel per mile down 12%; in line with the speed change.
2023→2024	−0.4 kn	−11%	−15%	−32%	−8%	0.4 kn slower, fuel per mile down 11%; in line with the speed change.
2022→2023	−1.9 kn	+3%	−14%	−20%	+15%	1.9 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.4 kn	+45%	+50%	+35%	+66%	0.4 kn faster, fuel per mile up 45%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−1.3 kn	−23%	−32%	−24%	−31%	1.3 kn slower, fuel per mile down 23%; in line with the speed change.
2019→2020	+7.2 kn	−18%	+92%	+20%	−41%	7.2 kn faster, fuel per mile down 18%; better than speed alone explains (hull, engine or trade).
2018→2019	+1.7 kn	−47%	−24%	+88%	−41%	1.7 kn faster, fuel per mile down 47%; better than speed alone explains (hull, engine or trade).

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
2025	SPRING MARINE MANAGEMENT S.A.	878	2,786	9,909	1,112	8.9	88.6	53.29	–
2024part-year	Leon Shipping & Trading SA	954	3,011	9,126	988	9.2	104.5	18.68	–
2024	SPRING MARINE MANAGEMENT S.A.	1,889	5,981	18,735	2,002	9.4	100.8	17.44	–
2023	not published	3,136	9,850	27,736	2,834	9.8	113.1	18.87	–
2022	not published	3,836	12,081	34,836	2,969	11.7	110.1	16.42	–
2021	not published	1,962	6,180	25,769	2,283	11.3	76.1	9.91	–
2020	not published	3,370	10,630	33,909	2,691	12.6	99.4	14.27	–
2019	not published	3,454	10,842	28,363	5,282	5.4	121.8	24.39	–
2018	not published	3,463	10,852	15,123	4,041	3.7	229.0	41.14	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	SPRING MARINE MANAGEMENT S.A.	53.29	7.95	+570%	1,617 of 1,665	DNV	A
2024part-year	Leon Shipping & Trading SA	–	–	–	–	ICS Verification Services	A
2024	SPRING MARINE MANAGEMENT S.A.	17.44	16.73	+4%	674 of 1,274	Lloyd's Register	A
2023	not published	18.87	16.23	+16%	752 of 1,314	ICS Verification Services	A
2022	not published	16.42	16.06	+2%	724 of 1,409	ICS Verification Services	A
2021	not published	9.91	16.69	−41%	167 of 1,343	ICS Verification Services	A
2020	not published	14.27	16.16	−12%	517 of 1,312	ICS Verification Services	A
2019	not published	24.39	17.32	+41%	942 of 1,321	ICS Verification Services	A
2018	not published	41.14	17.14	+140%	1,139 of 1,294	ICS Verification Services	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.