Navalyze · Oil tanker · Ship

IVER BLESSING

IMO: 9588287
Type: Oil tanker
Average cargo carried: 2,322 t
Flag (estimated): Gibraltar
Port of registry: Gibraltar
Technical efficiency: EIV 18.91 g CO₂/t·nm

ISM company (DoC holder) in 2025: Iver Ships BV

Report year

2022 at a glance

From the 2022 THETIS-MRV report. Carries about 2,179 t of cargo on average.

Fuel kg/nm

37.2

Oil tanker median 131 kg/nm (−72%)

CO₂ per transport work (cargo)

54.1

g CO₂/t·nm · Oil tanker median 8.51 (+535%)

Average speed

10.5 kn

Oil tanker median 10.9 kn (−4%)

Fuel per day at sea

9.4 t/day

Fuel consumed

1,418 t

CO₂ emitted

4,485 t

Distance sailed

38,076 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,610 h

150 days, 41% 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 42.1 kg/nm · median 129 (−67%)

76.1Ranks 12 of 1,665, lowest first191

Average speedThis ship 9.7 kn · median 10.7 (−9%)

8.0Faster than 25% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 57.8 g CO₂/t·nm · median 7.95 (+627%)

4.51Ranks 1,622 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2022

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 ports43%
From the EU28%
Into the EU22%
At berth in the EU7%

Fuel burned laden

–

Not reported

CO₂ at berth

336 t

7.5% 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 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

IVER BLESSING
Oil tanker median

0.050.0100.0150.0

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

Average speed, kn

IVER BLESSING
Oil tanker median

4.06.08.010.012.0

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

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

IVER BLESSING
Oil tanker median

0.020.040.060.080.0100

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.6 kn	+5%	+13%	−5%	+11%	0.6 kn faster, fuel per mile up 5%; better than speed alone explains (hull, engine or trade).
2023→2024	+3.4 kn	−37%	+0%	+12%	−39%	3.4 kn faster, fuel per mile down 37%; better than speed alone explains (hull, engine or trade).
2022→2023	−4.8 kn	+71%	−7%	−4%	+58%	4.8 kn slower, fuel per mile up 71%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.4 kn	−27%	−24%	−8%	−21%	0.4 kn faster, fuel per mile down 27%; better than speed alone explains (hull, engine or trade).
2020→2021	+0.5 kn	+7%	+13%	+41%	−11%	0.5 kn faster, fuel per mile up 7%; in line with the speed change.
2018→2020	+3.1 kn	+8%	+60%	+599%	+28%	3.1 kn faster, fuel per mile up 8%; 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	Iver Ships BV	1,652	5,266	39,235	4,063	9.7	42.1	57.8	–
2024	Iver Ships BV	1,649	5,207	41,256	4,532	9.1	40.0	52.3	–
2023	not published	2,336	7,369	36,676	6,467	5.7	63.7	85.3	–
2022	not published	1,418	4,485	38,076	3,610	10.5	37.2	54.1	–
2021	not published	2,100	6,559	41,400	4,090	10.1	50.7	68.5	–
2020	not published	1,385	4,407	29,338	3,042	9.6	47.2	76.8	–
2018	not published	184	574	4,200	650	6.5	43.8	60.1	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Iver Ships BV	57.8	7.95	+627%	1,622 of 1,665	RINA	B
2024	Iver Ships BV	52.3	8.06	+549%	1,741 of 1,787	RINA	B
2023	not published	85.3	8.44	+910%	1,793 of 1,797	RINA	B
2022	not published	54.1	8.51	+535%	1,912 of 1,961	RINA	B
2021	not published	68.5	8.86	+673%	1,769 of 1,789	RINA	B
2020	not published	76.8	9.03	+750%	1,861 of 1,870	RINA	B
2018	not published	60.1	8.86	+578%	1,749 of 1,779	RINA	B

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.