Navalyze · Oil tanker · Ship

IVER AMBASSADOR

IMO: 9768514
Type: Oil tanker
Average cargo carried: 2,491 t
Flag (estimated): Marshall Islands
Port of registry: Majuro
Technical efficiency: EIV 20.66 g CO₂/t·nm

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

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 2,491 t of cargo on average.

Fuel kg/nm

48.6

Oil tanker median 129 kg/nm (−62%)

CO₂ per transport work (cargo)

62.0

g CO₂/t·nm · Oil tanker median 7.95 (+679%)

Average speed

8.7 kn

Oil tanker median 10.7 kn (−19%)

Fuel per day at sea

10.2 t/day

Fuel consumed

1,422 t

CO₂ emitted

4,514 t

4,584 t CO₂eq incl. CH₄ and N₂O

Distance sailed

29,246 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,346 h

139 days, 38% 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 48.6 kg/nm · median 129 (−62%)

76.1Ranks 30 of 1,665, lowest first191

Average speedThis ship 8.7 kn · median 10.7 (−19%)

8.0Faster than 15% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 62.0 g CO₂/t·nm · median 7.95 (+679%)

4.51Ranks 1,635 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 ports40%
From the EU27%
Into the EU22%
At berth in the EU11%

75% of this ship's CO₂ falls under the EU ETS (3,405 t).

Fuel burned laden

–

Not reported

CO₂ at berth

476 t

10.5% 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

+70 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

IVER AMBASSADOR
Oil tanker median

0.050.0100.0150.0

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

Average speed, kn

IVER AMBASSADOR
Oil tanker median

4.06.08.010.012.0

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

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

IVER AMBASSADOR
Oil tanker median

0.020.040.060.080.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+2.6 kn	−10%	+27%	−24%	–	2.6 kn faster, fuel per mile down 10%; better than speed alone explains (hull, engine or trade).
2023→2024	−4.3 kn	+22%	−27%	−10%	–	4.3 kn slower, fuel per mile up 22%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.4 kn	−12%	−16%	+32%	−20%	0.4 kn slower, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.8 kn	+14%	+7%	+20%	−17%	0.8 kn slower, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.9 kn	+20%	+29%	+587%	+30%	0.9 kn faster, fuel per mile up 20%; in line with the speed change.
2019→2020	+5.3 kn	−29%	+40%	−87%	−27%	5.3 kn faster, fuel per mile down 29%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.8 kn	−3%	−14%	+23%	+35%	0.8 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading 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	1,422	4,514	29,246	3,346	8.7	48.6	62.0	–
2024	Iver Ships BV	2,077	6,567	38,294	6,228	6.1	54.2	161	–
2023	not published	1,880	5,866	42,466	4,091	10.4	44.3	42.2	–
2022	not published	1,629	5,086	32,205	2,989	10.8	50.6	52.7	–
2021	not published	1,190	3,722	26,826	2,321	11.6	44.4	63.3	–
2020	not published	144	456	3,905	366	10.7	37.0	48.7	–
2019	not published	1,624	5,068	31,195	5,755	5.4	52.1	66.3	–
2018	not published	1,356	4,228	25,303	4,104	6.2	53.6	49.1	–

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	62.0	7.95	+679%	1,635 of 1,665	RINA	B
2024	Iver Ships BV	–	–	–	–	RINA	B
2023	not published	42.2	8.44	+400%	1,723 of 1,797	RINA	B
2022	not published	52.7	8.51	+519%	1,908 of 1,961	RINA	B
2021	not published	63.3	8.86	+615%	1,762 of 1,789	RINA	B
2020	not published	48.7	9.03	+439%	1,810 of 1,870	RINA	B
2019	not published	66.3	8.83	+651%	1,888 of 1,919	RINA	B
2018	not published	49.1	8.86	+454%	1,720 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.