Navalyze · General cargo · Ship

HAPPY DIAMOND

IMO: 9551947
Type: General cargo ship
Port of registry: Amsterdam
Technical efficiency: EIV 13.10 g CO₂/t·nm
Ice class: IA

ISM company (DoC holder) in 2025: Spliethoffs Bevrachtingskantoor B.V.

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

82.3 kg/nm

General cargo median 35.3 kg/nm (+133%)

CO₂ per transport work (dwt)

29.63

g CO₂/dwt·nm · General cargo median 25.45 (+16%)

Average speed

12.3 kn

General cargo median 9.3 kn (+32%)

Fuel per day at sea

24.3 t/day

Fuel consumed

2,062 t

CO₂ emitted

6,451 t

6,552 t CO₂eq incl. CH₄ and N₂O

Distance sailed

25,041 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,033 h

85 days, 23% of the year

Within the general cargo fleet, 2025

Set against all 2,706 general cargo 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 82.3 kg/nm · median 35.3 (+133%)

17.4Ranks 2,500 of 2,706, lowest first78.8

Average speedThis ship 12.3 kn · median 9.3 (+32%)

7.0Faster than 92% of general cargo ships12.1

CO₂ per transport work (dwt)This ship 29.63 g CO₂/dwt·nm · median 25.45 (+16%)

10.14Ranks 1,724 of 2,706, lowest first52.37

Middle 80% of shipsMiddle 50%General cargo 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 ports35%
From the EU33%
Into the EU28%
At berth in the EU4%

69% of this ship's CO₂ falls under the EU ETS (4,481 t).

Fuel burned laden

–

Not reported

CO₂ at berth

3.7%

Alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

Full-year reports only. The General cargo median is the middle ship of all general cargo ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

HAPPY DIAMOND
General cargo median

20.040.060.080.0100.0

’182018’192019’212021’222022’232023’242024’252025

Average speed, kn

HAPPY DIAMOND
General cargo median

8.010.012.014.0

’182018’192019’212021’222022’232023’242024’252025

CO₂ per transport work (dwt), g CO₂/dwt·nm

HAPPY DIAMOND
General cargo median

0.020.040.060.080.0

’182018’192019’212021’222022’232023’242024’252025

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−1.0 kn	+3%	−5%	−51%	+14%	1.0 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.6 kn	+3%	+18%	+708%	−58%	1.6 kn faster, fuel per mile up 3%; better than speed alone explains (hull, engine or trade).
2022→2023	−0.9 kn	−7%	−14%	−46%	+163%	0.9 kn slower, fuel per mile down 7%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+1.2 kn	−6%	+5%	−36%	−7%	1.2 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2019→2021	−0.6 kn	+9%	+4%	−32%	−31%	0.6 kn slower, fuel per mile up 9%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−1.4 kn	−2%	−12%	+4%	−11%	1.4 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading 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
2025	Spliethoffs Bevrachtingskantoor B.V.	2,062	6,451	25,041	2,033	12.3	82.3	–	–
2024	Spliethoffs Bevrachtingskantoor B.V.	4,047	12,645	50,779	3,807	13.3	79.7	–	–
2023	not published	485	1,516	6,281	537	11.7	77.2	–	–
2022	not published	962	3,003	11,529	913	12.6	83.4	–	–
2021	not published	1,596	4,981	18,026	1,582	11.4	88.5	–	–
2019	not published	2,151	6,718	26,537	2,217	12.0	81.0	–	–
2018	not published	2,112	6,607	25,619	1,914	13.4	82.4	117.69	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/dwt·nm	General cargo median	vs General cargo	Rank	Verifier	Methods
2025	Spliethoffs Bevrachtingskantoor B.V.	29.63	25.45	+16%	1,724 of 2,706	Bureau Veritas	A
2024	Spliethoffs Bevrachtingskantoor B.V.	26.05	19.25	+35%	819 of 1,111	Bureau Veritas	A
2023	not published	61.98	20.67	+200%	1,008 of 1,045	Bureau Veritas	A
2022	not published	23.55	21.57	+9%	590 of 1,034	Verifavia	A
2021	not published	25.26	22.70	+11%	699 of 1,142	Verifavia	A
2019	not published	36.82	24.96	+48%	887 of 1,154	Verifavia	A
2018	not published	41.40	24.89	+66%	845 of 1,044	SGS United Kingdom Ltd	–

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. General cargo ships are benchmarked on CO₂ per transport work (dwt) (TW), in g CO₂/dwt·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 general cargo 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.