Navalyze · Oil tanker · Ship

SAPSAN

IMO: 9311713
Type: Oil tanker
Average cargo carried: 25,832 t
Port of registry: Majuro
Technical efficiency: EIV 7.50 g CO₂/t·nm
Ice class: IA Super

ISM company (DoC holder) in 2025: Roswell Tankers Corp.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 25,832 t of cargo on average.

Fuel kg/nm

111.1

Oil tanker median 128.5 kg/nm (−14%)

CO₂ per transport work (cargo)

13.56

g CO₂/t·nm · Oil tanker median 7.95 (+71%)

Average speed

10.7 kn

Oil tanker median 10.7 kn (+0%)

Fuel per day at sea

28.6 t/day

Fuel consumed

4,046 t

CO₂ emitted

12,759 t

12,958 t CO₂eq incl. CH₄ and N₂O

Distance sailed

36,425 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,401 h

142 days, 39% 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 111.1 kg/nm · median 128.5 (−14%)

76.1Ranks 534 of 1,665, lowest first190.8

Average speedThis ship 10.7 kn · median 10.7 (+0%)

8.0Faster than 49% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 13.56 g CO₂/t·nm · median 7.95 (+71%)

4.51Ranks 1,249 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 ports22%
From the EU35%
Into the EU35%
At berth in the EU8%

61% of this ship's CO₂ falls under the EU ETS (7,803 t).

Fuel burned laden

–

Not reported

CO₂ at berth

1,026 t

8.0% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+199 t

+1.6% CO₂eq on top of CO₂ alone, 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 kg/nm

SAPSAN
Oil tanker median

100.0110.0120.0130.0140.0

’182018’192019’222022’232023’242024’252025

Average speed, kn

SAPSAN
Oil tanker median

9.010.011.012.013.0

’182018’192019’222022’232023’242024’252025

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

SAPSAN
Oil tanker median

5.010.015.020.025.0

’182018’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.0 kn	+3%	+4%	+6%	+6%	Same speed, fuel per mile up 3%; in line with the speed change.
2023→2024	+1.5 kn	+3%	+19%	+9%	−44%	1.5 kn faster, fuel per mile up 3%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.0 kn	−8%	−9%	+278%	+87%	Same speed, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2019→2022	–	–	–	–	–
2018→2019	–	–	–	–	–

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	Roswell Tankers Corp.	4,046	12,759	36,425	3,401	10.7	111.1	13.56	–
2024	Roswell Tankers Corp.	3,711	11,694	34,331	3,223	10.7	108.1	12.85	–
2023	not published	3,319	10,469	31,594	3,426	9.2	105.0	22.90	–
2022	not published	958	3,042	8,353	904	9.2	114.7	12.24	–
2019	not published	0	0	–	0	–	–	–	–
2018	not published	1,729	5,451	15,742	1,295	12.2	109.8	11.95	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Roswell Tankers Corp.	13.56	7.95	+71%	1,249 of 1,665	Swiss Climate	A
2024	Roswell Tankers Corp.	12.85	8.06	+59%	1,362 of 1,787	Swiss Climate	A
2023	not published	22.90	8.44	+171%	1,590 of 1,797	DNV	A
2022	not published	12.24	8.51	+44%	1,402 of 1,961	DNV	A
2019	not published	–	–	–	–	RINA	A
2018	not published	11.95	8.86	+35%	1,228 of 1,779	ABS	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.