Navalyze · Oil tanker · Ship

SEMERU

IMO: 9388376
Type: Oil tanker
Average cargo carried: 58,898 t
Flag (estimated): Malta
Port of registry: Valletta
Technical efficiency: EEXI 3.44 g CO₂/t·nm

ISM company (DoC holder) in 2025: Marine Trust Ltd.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 58,898 t of cargo on average.

Fuel kg/nm

152

Oil tanker median 129 kg/nm (+18%)

CO₂ per transport work (cargo)

8.17

g CO₂/t·nm · Oil tanker median 7.95 (+3%)

Average speed

11.7 kn

Oil tanker median 10.7 kn (+9%)

Fuel per day at sea

42.6 t/day

Fuel consumed

2,600 t

CO₂ emitted

8,226 t

8,354 t CO₂eq incl. CH₄ and N₂O

Distance sailed

17,095 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,465 h

61 days, 17% 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 152 kg/nm · median 129 (+18%)

76.1Ranks 1,214 of 1,665, lowest first191

Average speedThis ship 11.7 kn · median 10.7 (+9%)

8.0Faster than 79% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 8.17 g CO₂/t·nm · median 7.95 (+3%)

4.51Ranks 866 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 ports7%
From the EU26%
Into the EU60%
At berth in the EU8%

57% of this ship's CO₂ falls under the EU ETS (4,722 t).

Fuel burned laden

1,732 t

67% of all fuel; 33% in ballast or unladen

CO₂ at berth

662 t

8.1% 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

+128 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 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 kg/nm

SEMERU
Oil tanker median

120.0140.0160.0180.0

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

Average speed, kn

SEMERU
Oil tanker median

4.06.08.010.012.0

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

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

SEMERU
Oil tanker median

6.08.010.012.014.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.3 kn	−10%	−12%	+16%	−15%	0.3 kn slower, fuel per mile down 10%; in line with the speed change.
2023→2024	+0.5 kn	+1%	+6%	+24%	+12%	0.5 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2022→2023	+5.8 kn	+4%	+108%	−51%	−27%	5.8 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2021→2022	−4.3 kn	−7%	−47%	−8%	+13%	4.3 kn slower, fuel per mile down 7%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−1.5 kn	+4%	−9%	−15%	−16%	1.5 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+5.1 kn	−3%	+75%	−2%	+30%	5.1 kn faster, fuel per mile down 3%; 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	Marine Trust Ltd.	2,600	8,226	17,095	1,465	11.7	152	8.17	67%
2024	Marine Trust Ltd.	2,490	7,798	14,770	1,230	12.0	169	9.64	56%
2023	not published	1,974	6,183	11,875	1,034	11.5	166	8.64	64%
2022	not published	3,880	12,290	24,199	4,237	5.7	160	11.8	51%
2021	not published	4,568	14,474	26,381	2,628	10.0	173	10.4	57%
2020	not published	5,135	16,233	30,870	2,684	11.5	166	12.4	–
2019	not published	5,395	16,916	31,427	4,948	6.4	172	9.47	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Marine Trust Ltd.	8.17	7.95	+3%	866 of 1,665	ABS	A
2024	Marine Trust Ltd.	9.64	8.06	+20%	1,128 of 1,787	ABS	A
2023	not published	8.64	8.44	+2%	929 of 1,797	ABS	A
2022	not published	11.8	8.51	+38%	1,363 of 1,961	ABS	A
2021	not published	10.4	8.86	+17%	1,090 of 1,789	ABS	A
2020	not published	12.4	9.03	+37%	1,275 of 1,870	ABS	A
2019	not published	9.47	8.83	+7%	1,063 of 1,919	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.