Navalyze · Oil tanker · Ship

MARAN WAVE

IMO: 9863558
Type: Oil tanker
Average cargo carried: 30,307 t
Flag (estimated): Bahamas
Port of registry: Nassau
Former names: ALTERA WAVE

ISM company (DoC holder) in 2025: Maran Shuttle Tankers Norway AS · part of Maran

Report year

2022 at a glance

From the 2022 THETIS-MRV report. Carries about 37,528 t of cargo on average.

Fuel kg/nm

185

Oil tanker median 131 kg/nm (+41%)

CO₂ per transport work (cargo)

15.4

g CO₂/t·nm · Oil tanker median 8.51 (+81%)

Average speed

6.6 kn

Oil tanker median 10.9 kn (−39%)

Fuel per day at sea

29.5 t/day

Fuel consumed

6,041 t

CO₂ emitted

18,929 t

Distance sailed

32,667 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,918 h

205 days, 56% 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 172 kg/nm · median 129 (+34%)

76.1Ranks 1,379 of 1,665, lowest first191

Average speedThis ship 7.1 kn · median 10.7 (−34%)

8.0Faster than 5% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 17.0 g CO₂/t·nm · median 7.95 (+113%)

4.51Ranks 1,335 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 ports70%
From the EU10%
Into the EU10%
At berth in the EU10%

Fuel burned laden

–

Not reported

CO₂ at berth

1,883 t

10.0% 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

MARAN WAVE
Oil tanker median

120.0140.0160.0180.0200.0

’212021’222022’232023’242024’252025

Average speed, kn

MARAN WAVE
Oil tanker median

6.08.010.012.0

’212021’222022’232023’242024’252025

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

MARAN WAVE
Oil tanker median

5.010.015.020.025.0

’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	−0.5 kn	+4%	−3%	+1%	+31%	0.5 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.5 kn	−13%	+8%	+6%	−27%	1.5 kn faster, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2022→2023	−0.5 kn	+2%	−6%	−14%	+14%	0.5 kn slower, fuel per mile up 2%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.2 kn	+12%	+10%	−9%	−25%	Same speed, fuel per mile up 12%; 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	Maran Shuttle Tankers Norway AS	5,140	15,399	29,958	4,213	7.1	172	17.0	–
2024LNG	Altera Infrastructure Norway AS	4,908	13,713	29,739	3,916	7.6	165	13.0	–
2023LNG / alt.	not published	5,327	15,589	28,134	4,607	6.1	189	17.6	–
2022	not published	6,041	18,929	32,667	4,918	6.6	185	15.4	–
2021	not published	5,951	17,769	35,919	5,300	6.8	166	20.6	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Maran Shuttle Tankers Norway AS	17.0	7.95	+113%	1,335 of 1,665	DNV	B+C
2024LNG	Altera Infrastructure Norway AS	13.0	8.06	+61%	1,365 of 1,787	DNV	B+C
2023LNG / alt.	not published	17.6	8.44	+109%	1,488 of 1,797	DNV	B+C
2022	not published	15.4	8.51	+81%	1,563 of 1,961	DNV	B+C
2021	not published	20.6	8.86	+133%	1,535 of 1,789	DNV	B+C

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.