Navalyze · Reefer · Ship

GREEN CRYSTAL

IMO: 8920995
Type: Refrigerated cargo carrier
Average cargo carried: 806 t
Port of registry: Nassau
Technical efficiency: EEXI 20.30 g CO₂/t·nm

ISM company (DoC holder) in 2025: Green Shipping AS

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 806 t of cargo on average.

Fuel per mile

49.1 kg/nm

Reefer median 82.9 kg/nm (−41%)

CO₂ per transport work (cargo)

192

g CO₂/t·nm · Reefer median 56.80 (+238%)

Average speed

11.7 kn

Reefer median 14.6 kn (−20%)

Fuel per day at sea

13.8 t/day

Fuel consumed

1,058 t

CO₂ emitted

3,329 t

3,381 t CO₂eq incl. CH₄ and N₂O

Distance sailed

21,533 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,845 h

77 days, 21% of the year

Within the reefer fleet, 2025

Set against all 109 reefer 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 49.1 kg/nm · median 82.9 (−41%)

55.8Ranks 6 of 109, lowest first117.7

Average speedThis ship 11.7 kn · median 14.6 (−20%)

8.2Faster than 24% of reefer ships16.7

CO₂ per transport work (cargo)This ship 191.83 g CO₂/t·nm · median 56.80 (+238%)

36.74Ranks 103 of 109, lowest first140.03

Middle 80% of shipsMiddle 50%Reefer 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 ports0%
From the EU27%
Into the EU70%
At berth in the EU3%

51% of this ship's CO₂ falls under the EU ETS (1,712 t).

Fuel burned laden

–

Not reported

CO₂ at berth

2.9%

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 Reefer median is the middle ship of all reefer ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

GREEN CRYSTAL
Reefer median

40.060.080.0100.0

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

Average speed, kn

GREEN CRYSTAL
Reefer median

8.010.012.014.016.0

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

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

GREEN CRYSTAL
Reefer median

50.0100150200

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	+0.0 kn	+13%	+13%	+25%	+17%	Same speed, fuel per mile up 13%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+0.2 kn	−1%	+1%	+81%	+97%	Same speed, fuel per mile flat.
2022→2023	+0.4 kn	+3%	+8%	−52%	+1%	0.4 kn faster, fuel per mile up 3%; in line with the speed change.
2021→2022	+0.1 kn	−12%	−12%	+18%	+9%	Same speed, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2020→2021	−1.2 kn	+15%	+3%	−58%	+29%	1.2 kn slower, fuel per mile up 15%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+2.5 kn	−20%	+0%	+55%	−6%	2.5 kn faster, fuel per mile down 20%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Green Shipping AS	1,058	3,329	21,533	1,845	11.7	49.1	191.83	–
2024	Green Shipping AS	751	2,357	17,273	1,475	11.7	43.5	163.36	–
2023	not published	418	1,325	9,527	826	11.5	43.8	83.04	–
2022	not published	839	2,634	19,815	1,793	11.1	42.4	82.59	–
2021	not published	808	2,534	16,770	1,523	11.0	48.2	75.85	–
2020	not published	1,667	5,274	39,670	3,244	12.2	42.0	58.62	–
2019	not published	1,346	4,233	25,651	2,634	9.7	52.5	62.58	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Reefer median	vs Reefer	Rank	Verifier	Methods
2025	Green Shipping AS	191.83	56.80	+238%	103 of 109	DNV	A
2024	Green Shipping AS	163.36	58.69	+178%	103 of 108	DNV	A
2023	not published	83.04	55.59	+49%	109 of 135	DNV	A
2022	not published	82.59	55.27	+49%	116 of 143	DNV	A
2021	not published	75.85	54.99	+38%	134 of 158	DNV	A
2020	not published	58.62	59.07	−1%	73 of 149	DNV	A
2019	not published	62.58	62.58	+0%	74 of 147	DNV	A

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