Navalyze · Oil tanker · Ship

MARLIN HESTIA

IMO: 9729233
Type: Oil tanker
Average cargo carried: 43,397 t
Flag (estimated): Marshall Islands
Port of registry: Majuro
Technical efficiency: EEXI 3.89 g CO₂/t·nm
Former names: NORD LAVENDER

ISM company (DoC holder) in 2025: Optra Shipping Ltd

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 67,468 t of cargo on average.

Fuel kg/nm

122

Oil tanker median 140 kg/nm (−13%)

CO₂ per transport work (cargo)

5.64

g CO₂/t·nm · Oil tanker median 8.86 (−36%)

Average speed

10.1 kn

Oil tanker median 9.8 kn (+3%)

Fuel per day at sea

29.6 t/day

Fuel consumed

660 t

CO₂ emitted

2,060 t

Distance sailed

5,413 nm

CO₂ ÷ CO₂ per mile

Time at sea

535 h

22 days, 6% 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 84.8 kg/nm · median 129 (−34%)

76.1Ranks 261 of 1,665, lowest first191

Average speedThis ship 12.1 kn · median 10.7 (+13%)

8.0Faster than 91% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 6.17 g CO₂/t·nm · median 7.95 (−22%)

4.51Ranks 481 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2018

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 EU72%
Into the EU28%
At berth in the EU0%

Fuel burned laden

–

Not reported

CO₂ at berth

0 t

0.0% 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 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

MARLIN HESTIA
Oil tanker median

80.0100.0120.0140.0

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

Average speed, kn

MARLIN HESTIA
Oil tanker median

9.010.011.012.013.014.0

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

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

MARLIN HESTIA
Oil tanker median

5.07.510.012.515.017.5

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−1.1 kn	−3%	−11%	−44%	−33%	1.1 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+3.8 kn	−22%	+10%	−67%	−18%	3.8 kn faster, fuel per mile down 22%; better than speed alone explains (hull, engine or trade).
2022→2023	−2.4 kn	+25%	+0%	+246%	+115%	2.4 kn slower, fuel per mile up 25%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.9 kn	−16%	−9%	−41%	−50%	0.9 kn faster, fuel per mile down 16%; better than speed alone explains (hull, engine or trade).
2020→2021	−1.9 kn	−3%	−18%	+43%	+34%	1.9 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.5 kn	+29%	+46%	−27%	−48%	1.5 kn faster, fuel per mile up 29%; in line with the speed change.
2018→2019	+1.2 kn	−31%	−22%	+181%	+168%	1.2 kn faster, fuel per mile down 31%; 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	Optra Shipping Ltd	503	1,588	5,929	490	12.1	84.8	6.17	–
2024	Optra Shipping Ltd	923	2,878	10,594	803	13.2	87.1	9.27	–
2023	not published	3,617	11,346	32,525	3,444	9.4	111	11.2	–
2022	not published	835	2,603	9,392	796	11.8	88.9	5.24	–
2021	not published	1,674	5,256	15,862	1,456	10.9	106	10.6	–
2020	not published	1,214	3,808	11,106	870	12.8	109	7.87	58%
2019	not published	1,285	4,025	15,190	1,342	11.3	84.6	15.1	31%
2018	not published	660	2,060	5,413	535	10.1	122	5.64	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Optra Shipping Ltd	6.17	7.95	−22%	481 of 1,665	DNV	B
2024	Optra Shipping Ltd	9.27	8.06	+15%	1,079 of 1,787	DNV	B
2023	not published	11.2	8.44	+33%	1,238 of 1,797	DNV	B
2022	not published	5.24	8.51	−38%	288 of 1,961	DNV	B
2021	not published	10.6	8.86	+19%	1,116 of 1,789	DNV	B
2020	not published	7.87	9.03	−13%	750 of 1,870	Bureau Veritas	C
2019	not published	15.1	8.83	+71%	1,501 of 1,919	Bureau Veritas	C
2018	not published	5.64	8.86	−36%	379 of 1,779	Bureau Veritas	–

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.