Navalyze · Chemical tanker · Ship

SEAWAYS WAVE

IMO: 9387918
Type: Chemical tanker
Average cargo carried: 20,746 t
Port of registry: Majuro
Technical efficiency: EEXI 4.89 g CO₂/t·nm
Former names: ADRIATIC WAVE

ISM company (DoC holder) in 2025: HEROIC SCUTUM INC;

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 20,746 t of cargo on average.

Fuel per mile

90.8 kg/nm

Chemical tanker median 79.7 kg/nm (+14%)

CO₂ per transport work (cargo)

13.75

g CO₂/t·nm · Chemical tanker median 15.04 (−9%)

Average speed

10.8 kn

Chemical tanker median 11.1 kn (−3%)

Fuel per day at sea

23.5 t/day

Fuel consumed

1,213 t

CO₂ emitted

3,811 t

3,871 t CO₂eq incl. CH₄ and N₂O

Distance sailed

13,361 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,237 h

52 days, 14% of the year

Within the chemical tanker fleet, 2025

Set against all 1,460 chemical 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 per mileThis ship 90.8 kg/nm · median 79.7 (+14%)

52.8Ranks 1,006 of 1,460, lowest first111.0

Average speedThis ship 10.8 kn · median 11.1 (−3%)

8.8Faster than 41% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 13.75 g CO₂/t·nm · median 15.04 (−9%)

7.93Ranks 638 of 1,460, lowest first40.17

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2025

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 ports6%
From the EU56%
Into the EU31%
At berth in the EU7%

0% of this ship's CO₂ falls under the EU ETS (0 t).

Fuel burned laden

56%

44% in ballast or unladen

CO₂ at berth

7.0%

Alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

Full-year reports only. The Chemical tanker median is the middle ship of all chemical tanker ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

SEAWAYS WAVE
Chemical tanker median

70.080.090.0100.0110.0

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

Average speed, kn

SEAWAYS WAVE
Chemical tanker median

9.010.011.012.013.0

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

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

SEAWAYS WAVE
Chemical tanker median

7.510.012.515.017.5

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−1.9 kn	+2%	−14%	−28%	+59%	1.9 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2022→2024	+0.7 kn	−17%	−11%	+2%	−24%	0.7 kn faster, fuel per mile down 17%; better than speed alone explains (hull, engine or trade).
2021→2022	+1.1 kn	+34%	+48%	+170%	−9%	1.1 kn faster, fuel per mile up 34%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.0 kn	−13%	−5%	+13%	+22%	1.0 kn faster, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2018→2020	−2.1 kn	−11%	−26%	−13%	−1%	2.1 kn slower, fuel per mile down 11%; worse than speed alone explains (fouling, weather, loading or trade).

Part-year reports are left out of these comparisons. 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025part-year	HEROIC SCUTUM INC;	1,213	3,811	13,361	1,237	10.8	90.8	13.75	56%
2025	HEROIC SCUTUM INC-MAI	1,213	3,811	13,361	1,237	10.8	90.8	13.75	56%
2024	HEROIC SCUTUM INC;	1,644	5,140	18,447	1,448	12.7	89.1	8.65	93%
2022	not published	1,929	6,108	18,026	1,503	12.0	107.0	11.36	85%
2021	not published	531	1,679	6,668	612	10.9	79.7	12.53	57%
2020	not published	542	1,709	5,916	597	9.9	91.6	10.30	62%
2018	not published	703	2,208	6,825	571	12.0	103.0	10.36	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025part-year	HEROIC SCUTUM INC;	–	–	–	–	ABS	B+C
2025	HEROIC SCUTUM INC-MAI	13.75	15.04	−9%	638 of 1,460	ABS	B+C
2024	HEROIC SCUTUM INC;	8.65	16.73	−48%	143 of 1,274	ABS	B+C
2022	not published	11.36	16.06	−29%	345 of 1,409	ABS	B+C
2021	not published	12.53	16.69	−25%	368 of 1,343	ABS	B+C
2020	not published	10.30	16.16	−36%	198 of 1,312	ABS	B+C
2018	not published	10.36	17.14	−40%	192 of 1,294	Korean Register	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Chemical 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 chemical 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.