Navalyze · Bulk carrier · Ship

RONG MAY

IMO: 9774484
Type: Bulk carrier
Average cargo carried: 31,795 t
Port of registry: Monrovia
Technical efficiency: EEDI 3.32 g CO₂/t·nm

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 31,795 t of cargo on average.

Fuel per mile

100.3 kg/nm

Bulk carrier median 86.1 kg/nm (+16%)

CO₂ per transport work (cargo)

9.90

g CO₂/t·nm · Bulk carrier median 8.27 (+20%)

Average speed

6.8 kn

Bulk carrier median 10.8 kn (−37%)

Fuel per day at sea

16.4 t/day

Fuel consumed

3,694 t

CO₂ emitted

11,593 t

Distance sailed

36,829 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,410 h

225 days, 62% of the year

Within the bulk carrier fleet, 2023

Set against all 3,548 bulk carrier 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 100.3 kg/nm · median 86.1 (+16%)

63.6Ranks 2,686 of 3,548, lowest first124.7

Average speedThis ship 6.8 kn · median 10.8 (−37%)

8.8Faster than 3% of bulk carrier ships12.0

CO₂ per transport work (cargo)This ship 9.90 g CO₂/t·nm · median 8.27 (+20%)

4.85Ranks 2,324 of 3,548, lowest first17.36

Middle 80% of shipsMiddle 50%Bulk carrier 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 ports12%
From the EU45%
Into the EU35%
At berth in the EU9%

Fuel burned laden

43%

57% in ballast or unladen

CO₂ at berth

8.6%

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 Bulk carrier median is the middle ship of all bulk carrier ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

RONG MAY
Bulk carrier median

50.0100.0150.0200.0250.0

’182018’192019’212021’222022’232023

Average speed, kn

RONG MAY
Bulk carrier median

6.08.010.012.0

’182018’192019’212021’222022’232023

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

RONG MAY
Bulk carrier median

4.06.08.010.0

’182018’192019’212021’222022’232023

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2022→2023	−4.6 kn	−54%	−73%	+6,548%	+17%	4.6 kn slower, fuel per mile down 54%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.1 kn	+81%	+80%	−90%	+77%	Same speed, fuel per mile up 81%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2021	+0.7 kn	+31%	+39%	−73%	−22%	0.7 kn faster, fuel per mile up 31%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+1.5 kn	+3%	+20%	+14%	−24%	1.5 kn faster, fuel per mile up 3%; better than speed alone explains (hull, engine or trade).

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	3,694	11,593	36,829	5,410	6.8	100.3	9.90	43%
2022	not published	121	385	554	48	11.4	218.6	8.47	30%
2021	not published	678	2,150	5,625	490	11.5	120.5	4.78	–
2019	not published	1,943	6,085	21,151	1,962	10.8	91.9	6.15	–
2018	not published	1,655	5,188	18,520	1,997	9.3	89.4	8.13	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Bulk carrier median	vs Bulk carrier	Rank	Verifier	Methods
2023	not published	9.90	8.27	+20%	2,324 of 3,548	ABS	–
2022	not published	8.47	8.71	−3%	1,869 of 3,968	ABS	–
2021	not published	4.78	8.57	−44%	232 of 3,466	ABS	–
2019	not published	6.15	8.38	−27%	746 of 3,360	ABS	A+B
2018	not published	8.13	8.50	−4%	1,550 of 3,384	ABS	A+B

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.