Navalyze · Oil tanker · Ship

ZHUANG YUAN AO

IMO: 9650339
Type: Oil tanker
Average cargo carried: 4,195 t
Port of registry: Hong Kong
Technical efficiency: EEXI 10.80 g CO₂/t·nm

ISM company (DoC holder) in 2025: BRIGHT ZHUANGYUAN SHIPPING LTD

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 4,195 t of cargo on average.

Fuel per mile

80.5 kg/nm

Oil tanker median 128.5 kg/nm (−37%)

CO₂ per transport work (cargo)

61.17

g CO₂/t·nm · Oil tanker median 7.95 (+669%)

Average speed

10.1 kn

Oil tanker median 10.7 kn (−6%)

Fuel per day at sea

19.5 t/day

Fuel consumed

1,773 t

CO₂ emitted

5,649 t

5,736 t CO₂eq incl. CH₄ and N₂O

Distance sailed

22,014 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,187 h

91 days, 25% 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 80.5 kg/nm · median 128.5 (−37%)

76.1Ranks 218 of 1,665, lowest first190.8

Average speedThis ship 10.1 kn · median 10.7 (−6%)

8.0Faster than 32% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 61.17 g CO₂/t·nm · median 7.95 (+669%)

4.51Ranks 1,630 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 ports15%
From the EU34%
Into the EU37%
At berth in the EU14%

64% of this ship's CO₂ falls under the EU ETS (3,643 t).

Fuel burned laden

98% in ballast or unladen

CO₂ at berth

13.6%

Alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.015

Uplift from CH₄ and N₂O, counted in full from 2026

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	BRIGHT ZHUANGYUAN SHIPPING LTD	1,773	5,649	22,014	2,187	10.1	80.5	61.17	2%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	BRIGHT ZHUANGYUAN SHIPPING LTD	61.17	7.95	+669%	1,630 of 1,665	ABS	A

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.