Navalyze · Other · Ship

RONJA HERØY

IMO: 9923188
Type: Other ship types
Average cargo carried: 47 t
Port of registry: Aalesund
Fuel: Mostly LNG
Former names: RONJA HEROY

ISM company (DoC holder) in 2025: Solvtrans Management AS

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 47 t of cargo on average.

Fuel per mile

219.5 kg/nm

Other median 87.2 kg/nm (+152%)

CO₂ per transport work (cargo)

13,398

g CO₂/t·nm · Other median 86.69 (+15,355%)

Average speed

1.8 kn

Other median 10.4 kn (−83%)

Fuel per day at sea

9.3 t/day

Fuel consumed

2,712 t

CO₂ emitted

7,710 t

9,382 t CO₂eq incl. CH₄ and N₂O

Distance sailed

12,352 nm

CO₂ ÷ CO₂ per mile

Time at sea

7,018 h

292 days, 80% of the year

Within the other fleet, 2025

Set against all 159 other 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 219.5 kg/nm · median 87.2 (+152%)

47.6Ranks 154 of 159, lowest first160.7

Average speedThis ship 1.8 kn · median 10.4 (−83%)

5.8Faster than 1% of other ships13.4

CO₂ per transport work (cargo)This ship 13,398.11 g CO₂/t·nm · median 86.69 (+15,355%)

30.78Ranks 157 of 159, lowest first600.46

Middle 80% of shipsMiddle 50%Other 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 ports100%
From the EU0%
Into the EU0%
At berth in the EU0%

100% of this ship's CO₂ falls under the EU ETS (7,710 t).

Fuel burned laden

–

Not reported

CO₂ at berth

0.1%

Alongside in EU ports

Methane (CH₄)

56.4 t

LNG engines slip unburnt methane

CO₂eq ÷ CO₂

1.217

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel per mile, kg/nm

RONJA HERØY
Other median

50.0100.0150.0200.0250.0

’242024’252025

Average speed, kn

RONJA HERØY
Other median

0.02.55.07.510.012.5

’242024’252025

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	+0.0 kn	−0%	−2%	+14%	–	Same speed, fuel per mile flat.

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
2025LNG	Solvtrans Management AS	2,712	7,710	12,352	7,018	1.8	219.5	13,398.11	–
2024	Solvtrans Management AS	2,380	7,163	10,799	5,995	1.8	220.4	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Other median	vs Other	Rank	Verifier	Methods
2025LNG	Solvtrans Management AS	13,398.11	86.69	+15,355%	157 of 159	DNV	A+C
2024	Solvtrans Management AS	–	–	–	–	DNV	B+C

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