Navalyze · Oil tanker · Ship

CHRYSANTHEMUM

IMO: 9417452
Type: Oil tanker
Average cargo carried: 46,444 t
Port of registry: Nassau
Technical efficiency: EEXI 3.44 g CO₂/t·nm

ISM company (DoC holder) in 2025: Prosper Navigation Ltd

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 46,444 t of cargo on average.

Fuel per mile

119.0 kg/nm

Oil tanker median 128.5 kg/nm (−7%)

CO₂ per transport work (cargo)

8.02

g CO₂/t·nm · Oil tanker median 7.95 (+1%)

Average speed

11.4 kn

Oil tanker median 10.7 kn (+7%)

Fuel per day at sea

32.7 t/day

Fuel consumed

4,430 t

CO₂ emitted

13,866 t

14,084 t CO₂eq incl. CH₄ and N₂O

Distance sailed

37,227 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,255 h

136 days, 37% 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 per mileThis ship 119.0 kg/nm · median 128.5 (−7%)

76.1Ranks 661 of 1,665, lowest first190.8

Average speedThis ship 11.4 kn · median 10.7 (+7%)

8.0Faster than 73% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 8.02 g CO₂/t·nm · median 7.95 (+1%)

4.51Ranks 846 of 1,665, lowest first27.66

Middle 80% of shipsMiddle 50%Oil 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 ports2%
From the EU36%
Into the EU57%
At berth in the EU5%

53% of this ship's CO₂ falls under the EU ETS (7,415 t).

Fuel burned laden

–

Not reported

CO₂ at berth

5.1%

Alongside in EU ports

Methane (CH₄)

0.2 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 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 per mile, kg/nm

CHRYSANTHEMUM
Oil tanker median

100.0150.0200.0250.0

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

Average speed, kn

CHRYSANTHEMUM
Oil tanker median

6.08.010.012.014.0

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

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

CHRYSANTHEMUM
Oil tanker median

5.010.015.020.025.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	+1.6 kn	−49%	−40%	+5,280%	–	1.6 kn faster, fuel per mile down 49%; better than speed alone explains (hull, engine or trade).
2023→2024	−2.4 kn	+56%	+24%	−98%	–	2.4 kn slower, fuel per mile up 56%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.8 kn	−17%	−22%	+152%	+45%	0.8 kn slower, fuel per mile down 17%; in line with the speed change.
2021→2022	+3.8 kn	−8%	+31%	+107%	−63%	3.8 kn faster, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2020→2021	+1.3 kn	+7%	+25%	−68%	+52%	1.3 kn faster, fuel per mile up 7%; better than speed alone explains (hull, engine or trade).
2019→2020	−1.4 kn	+20%	+2%	−10%	+77%	1.4 kn slower, fuel per mile up 20%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Prosper Navigation Ltd	4,430	13,866	37,227	3,255	11.4	119.0	8.02	–
2024	Prosper Navigation Ltd	161	504	692	71	9.8	232.6	–	–
2023	not published	5,340	16,714	35,775	2,930	12.2	149.3	10.82	–
2022	not published	2,551	7,953	14,195	1,090	13.0	179.7	7.48	–
2021	not published	1,334	4,233	6,846	744	9.2	194.9	20.36	–
2020	not published	3,926	12,360	21,504	2,733	7.9	182.6	13.42	–
2019	not published	3,645	11,411	23,891	2,579	9.3	152.6	7.58	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Prosper Navigation Ltd	8.02	7.95	+1%	846 of 1,665	Lloyd's Register	B
2024	Prosper Navigation Ltd	–	–	–	–	Lloyd's Register	B
2023	not published	10.82	8.44	+28%	1,204 of 1,797	Lloyd's Register	B
2022	not published	7.48	8.51	−12%	784 of 1,961	Lloyd's Register	B
2021	not published	20.36	8.86	+130%	1,530 of 1,789	Lloyd's Register	B
2020	not published	13.42	9.03	+49%	1,335 of 1,870	Lloyd's Register	B
2019	not published	7.58	8.83	−14%	735 of 1,919	Lloyd's Register	B

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.