Navalyze · Bulk carrier · Ship

RUBY STAR

IMO: 9523512
Type: Bulk carrier
Average cargo carried: 32,941 t
Port of registry: Nassau
Technical efficiency: EIV 3.93 g CO₂/t·nm

2020 at a glance

From the 2020 THETIS-MRV report. Carries about 32,941 t of cargo on average.

Fuel per mile

114.8 kg/nm

Bulk carrier median 86.5 kg/nm (+33%)

CO₂ per transport work (cargo)

10.87

g CO₂/t·nm · Bulk carrier median 8.24 (+32%)

Average speed

11.8 kn

Bulk carrier median 11.1 kn (+6%)

Fuel per day at sea

32.6 t/day

Fuel consumed

945 t

CO₂ emitted

2,946 t

Distance sailed

8,227 nm

CO₂ ÷ CO₂ per mile

Time at sea

695 h

29 days, 8% of the year

Within the bulk carrier fleet, 2020

Set against all 3,150 bulk carrier ships with a full-year 2020 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 114.8 kg/nm · median 86.5 (+33%)

63.9Ranks 2,728 of 3,150, lowest first123.3

Average speedThis ship 11.8 kn · median 11.1 (+6%)

9.3Faster than 79% of bulk carrier ships12.3

CO₂ per transport work (cargo)This ship 10.87 g CO₂/t·nm · median 8.24 (+32%)

5.13Ranks 2,350 of 3,150, lowest first14.62

Middle 80% of shipsMiddle 50%Bulk carrier medianThis ship

Where the emissions happen, 2020

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 EU49%
Into the EU46%
At berth in the EU5%

Fuel burned laden

–

Not reported

CO₂ at berth

4.8%

Alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

–

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
2020	not published	945	2,946	8,227	695	11.8	114.8	10.87	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Bulk carrier median	vs Bulk carrier	Rank	Verifier	Methods
2020	not published	10.87	8.24	+32%	2,350 of 3,150	Bureau Veritas	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Bulk carrier 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 bulk carrier 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.