Navalyze · Oil tanker · Ship

YI BAO

IMO: 9430272
Type: Oil tanker
Average cargo carried: 40,523 t
Port of registry: Monrovia
Technical efficiency: EEXI 5.10 g CO₂/t·nm
Former names: ALPINE ETERNITY, CELSIUS ROSKILDE

ISM company (DoC holder) in 2024: SYNERGY DENMARK A/S · part of Synergy Marine

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 40,523 t of cargo on average.

Fuel per mile

98.2 kg/nm

Oil tanker median 129.1 kg/nm (−24%)

CO₂ per transport work (cargo)

7.55

g CO₂/t·nm · Oil tanker median 8.44 (−11%)

Average speed

11.6 kn

Oil tanker median 11.0 kn (+5%)

Fuel per day at sea

27.2 t/day

Fuel consumed

109 t

CO₂ emitted

339 t

Distance sailed

1,108 nm

CO₂ ÷ CO₂ per mile

Time at sea

96 h

4 days, 1% 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 98.2 kg/nm · median 129.1 (−24%)

80.4Ranks 397 of 1,797, lowest first192.7

Average speedThis ship 11.6 kn · median 11.0 (+5%)

8.1Faster than 66% of oil tanker ships12.4

CO₂ per transport work (cargo)This ship 7.55 g CO₂/t·nm · median 8.44 (−11%)

4.78Ranks 751 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 ports0%
From the EU0%
Into the EU100%
At berth in the EU0%

Fuel burned laden

100%

0% in ballast or unladen

CO₂ at berth

0.0%

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

YI BAO
Oil tanker median

60.080.0100.0120.0140.0

’182018’192019’202020’212021’232023

Average speed, kn

YI BAO
Oil tanker median

6.08.010.012.014.0

’182018’192019’202020’212021’232023

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

YI BAO
Oil tanker median

6.08.010.012.014.0

’182018’192019’202020’212021’232023

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2021→2023	−1.3 kn	+23%	+10%	−96%	−6%	1.3 kn slower, fuel per mile up 23%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.5 kn	−20%	−17%	+238%	−3%	0.5 kn faster, fuel per mile down 20%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.2 kn	−7%	−9%	+0%	−22%	Same speed, fuel per mile down 7%; in line with the speed change.
2018→2019	+5.1 kn	−21%	+33%	−68%	−15%	5.1 kn faster, fuel per mile down 21%; better than speed alone explains (hull, engine or trade).

Part-year reports are left out of these comparisons. 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
2024part-year	SYNERGY DENMARK A/S	1,180	3,708	11,440	988	11.6	103.1	8.61	82%
2023	not published	109	339	1,108	96	11.6	98.2	7.55	100%
2021	not published	2,174	6,879	27,262	2,106	12.9	79.7	8.06	–
2020	not published	808	2,532	8,065	649	12.4	100.1	8.30	–
2019	not published	867	2,709	8,032	635	12.6	107.9	10.65	–
2018	not published	3,437	10,761	25,243	3,369	7.5	136.2	12.60	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2024part-year	SYNERGY DENMARK A/S	–	–	–	–	ABS	–
2023	not published	7.55	8.44	−11%	751 of 1,797	ABS	–
2021	not published	8.06	8.86	−9%	767 of 1,789	ClassNK	C
2020	not published	8.30	9.03	−8%	823 of 1,870	ClassNK	C
2019	not published	10.65	8.83	+21%	1,238 of 1,919	ClassNK	C
2018	not published	12.60	8.86	+42%	1,270 of 1,779	DNV	B+C

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.