Navalyze · Bulk carrier · Ship

DEMA

IMO: 9416446
Type: Bulk carrier
Average cargo carried: 29,026 t
Flag (estimated): Marshall Islands
Port of registry: Majuro
Technical efficiency: EEXI 5.30 g CO₂/t·nm
Former names: FOUR DIAMOND

ISM company (DoC holder) in 2025: Marakeb Ship Management DMCC

Report year

2022 at a glance

From the 2022 THETIS-MRV report. Carries about 19,319 t of cargo on average.

Fuel kg/nm

89.0

Bulk carrier median 90.8 kg/nm (−2%)

CO₂ per transport work (cargo)

14.5

g CO₂/t·nm · Bulk carrier median 8.71 (+67%)

Average speed

9.2 kn

Bulk carrier median 11.1 kn (−17%)

Fuel per day at sea

19.7 t/day

Fuel consumed

1,729 t

CO₂ emitted

5,451 t

Distance sailed

19,418 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,108 h

88 days, 24% of the year

Within the bulk carrier fleet, 2025

Set against all 3,611 bulk carrier 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 kg/nmThis ship 85.2 kg/nm · median 82.6 (+3%)

61.0Ranks 1,997 of 3,611, lowest first114

Average speedThis ship 10.5 kn · median 10.7 (−2%)

8.8Faster than 45% of bulk carrier ships11.8

CO₂ per transport work (cargo)This ship 9.18 g CO₂/t·nm · median 7.90 (+16%)

4.80Ranks 2,344 of 3,611, lowest first15.9

Middle 80% of shipsMiddle 50%Bulk carrier medianThis ship

Where the emissions happen, 2022

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 EU41%
Into the EU37%
At berth in the EU7%

Fuel burned laden

–

Not reported

CO₂ at berth

372 t

6.8% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

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 kg/nm

DEMA
Bulk carrier median

75.080.085.090.095.0

’182018’202020’222022’232023’242024’252025

Average speed, kn

DEMA
Bulk carrier median

9.010.011.012.0

’182018’202020’222022’232023’242024’252025

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

DEMA
Bulk carrier median

0.05.010.015.0

’182018’202020’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.1 kn	−1%	−0%	−29%	−13%	Same speed, fuel per mile flat.
2023→2024	−0.4 kn	+7%	+4%	−32%	+1%	0.4 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.6 kn	−10%	+6%	−26%	−28%	1.6 kn faster, fuel per mile down 10%; better than speed alone explains (hull, engine or trade).
2020→2022	−2.4 kn	+14%	−9%	+71%	+40%	2.4 kn slower, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2020	+1.9 kn	−12%	+6%	+9%	+271%	1.9 kn faster, fuel per mile down 12%; 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	Marakeb Ship Management DMCC	601	1,880	7,056	669	10.5	85.2	9.18	93%
2024	Marakeb Ship Management DMCC	852	2,686	9,885	946	10.4	86.2	10.6	90%
2023	not published	1,159	3,663	14,466	1,336	10.8	80.2	10.5	97%
2022	not published	1,729	5,451	19,418	2,108	9.2	89.0	14.5	–
2020	not published	884	2,807	11,353	979	11.6	77.9	10.4	–
2018	not published	924	5,756	10,442	1,081	9.7	88.5	2.80	97%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Bulk carrier median	vs Bulk carrier	Rank	Verifier	Methods
2025	Marakeb Ship Management DMCC	9.18	7.90	+16%	2,344 of 3,611	ABS	A+B
2024	Marakeb Ship Management DMCC	10.6	8.09	+31%	2,249 of 3,089	ABS	A+C
2023	not published	10.5	8.27	+27%	2,473 of 3,548	ABS	A
2022	not published	14.5	8.71	+67%	3,365 of 3,968	DNV	A+C
2020	not published	10.4	8.24	+26%	2,249 of 3,150	ABS	B
2018	not published	2.80	8.50	−67%	58 of 3,384	ABS	–

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.