Navalyze · Oil tanker · Ship

SEA RUBY

IMO: 9779616
Type: Oil tanker
Average cargo carried: 123,681 t
Port of registry: Majuro
Technical efficiency: EEDI 2.11 g CO₂/t·nm

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 123,681 t of cargo on average.

Fuel per mile

168.7 kg/nm

Oil tanker median 129.1 kg/nm (+31%)

CO₂ per transport work (cargo)

4.27

g CO₂/t·nm · Oil tanker median 8.44 (−49%)

Average speed

9.9 kn

Oil tanker median 11.0 kn (−10%)

Fuel per day at sea

40.3 t/day

Fuel consumed

9,193 t

CO₂ emitted

28,775 t

Distance sailed

54,485 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,479 h

228 days, 63% of the year

Within the oil tanker fleet, 2023

Set against all 1,797 oil tanker ships with a full-year 2023 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 168.7 kg/nm · median 129.1 (+31%)

80.4Ranks 1,468 of 1,797, lowest first192.7

Average speedThis ship 9.9 kn · median 11.0 (−10%)

8.1Faster than 26% of oil tanker ships12.4

CO₂ per transport work (cargo)This ship 4.27 g CO₂/t·nm · median 8.44 (−49%)

4.78Ranks 102 of 1,797, lowest first25.50

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2023

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 ports1%
From the EU41%
Into the EU47%
At berth in the EU10%

Fuel burned laden

50%

50% in ballast or unladen

CO₂ at berth

10.3%

Alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

–

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

SEA RUBY
Oil tanker median

120.0140.0160.0180.0200.0

’182018’222022’232023

Average speed, kn

SEA RUBY
Oil tanker median

9.010.011.012.013.0

’182018’222022’232023

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

SEA RUBY
Oil tanker median

2.04.06.08.010.0

’182018’222022’232023

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2022→2023	−1.1 kn	+7%	−3%	+422%	+6%	1.1 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2022	−1.4 kn	−19%	−28%	−43%	+78%	1.4 kn slower, fuel per mile down 19%; in line with the speed change.

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
2023	not published	9,193	28,775	54,485	5,479	9.9	168.7	4.27	50%
2022	not published	1,643	5,193	10,440	950	11.0	157.3	4.02	–
2018	not published	3,556	11,110	18,259	1,472	12.4	194.7	2.26	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2023	not published	4.27	8.44	−49%	102 of 1,797	ABS	A
2022	not published	4.02	8.51	−53%	82 of 1,961	DNV	A
2018	not published	2.26	8.86	−74%	41 of 1,779	DNV	–

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.