Navalyze · General cargo · Ship

PROFESSOR B

IMO: 8401523
Type: General cargo ship
Average cargo carried: 9,913 t
Flag (estimated): Comoros
Port of registry: Moroni
Technical efficiency: EIV 14.77 g CO₂/t·nm
Former names: OSMAN PRINCE

Report year

2019 at a glance

From the 2019 THETIS-MRV report. Carries about 6,336 t of cargo on average.

Fuel kg/nm

75.2

General cargo median 57.7 kg/nm (+30%)

CO₂ per transport work (dwt)

35.2

g CO₂/dwt·nm · General cargo median 25.0 (+41%)

Average speed

4.8 kn

General cargo median 9.7 kn (−51%)

Fuel per day at sea

8.6 t/day

Fuel consumed

197 t

CO₂ emitted

618 t

Distance sailed

2,626 nm

CO₂ ÷ CO₂ per mile

Time at sea

551 h

23 days, 6% of the year

Within the general cargo fleet, 2022

Set against all 1,034 general cargo ships with a full-year 2022 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 93.7 kg/nm · median 57.3 (+64%)

36.2Ranks 917 of 1,034, lowest first96.6

Average speedThis ship 8.0 kn · median 10.8 (−26%)

8.0Faster than 10% of general cargo ships12.9

CO₂ per transport work (dwt)This ship 29.9 g CO₂/dwt·nm · median 21.6 (+39%)

9.00Ranks 765 of 1,034, lowest first43.7

Middle 80% of shipsMiddle 50%General cargo medianThis ship

Where the emissions happen, 2019

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 EU75%
Into the EU23%
At berth in the EU2%

Fuel burned laden

–

Not reported

CO₂ at berth

13 t

2.2% 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 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 kg/nm

PROFESSOR B
General cargo median

40.060.080.0100.0

’182018’192019’212021’222022

Average speed, kn

PROFESSOR B
General cargo median

4.06.08.010.012.0

’182018’192019’212021’222022

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

PROFESSOR B
General cargo median

0.0100200300400

’182018’192019’212021’222022

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2021→2022	−2.5 kn	+34%	+2%	−49%	+67%	2.5 kn slower, fuel per mile up 34%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2021	+5.7 kn	−7%	+105%	+24%	−49%	5.7 kn faster, fuel per mile down 7%; better than speed alone explains (hull, engine or trade).
2018→2019	−6.9 kn	+65%	−33%	+83%	−89%	6.9 kn slower, fuel per mile up 65%; 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2022	not published	156	494	1,666	208	8.0	93.7	29.9	–
2021	not published	228	721	3,268	311	10.5	69.8	18.0	–
2019	not published	197	618	2,626	551	4.8	75.2	37.1	–
2018	not published	65	205	1,436	122	11.7	45.6	11,234	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/dwt·nm	General cargo median	vs General cargo	Rank	Verifier	Methods
2022	not published	29.9	21.6	+39%	765 of 1,034	ICS Verification Services	A
2021	not published	17.9	22.7	−21%	340 of 1,142	Dromon Bureau of Shipping	A
2019	not published	35.2	25.0	+41%	861 of 1,154	Dromon Bureau of Shipping	A
2018	not published	317	24.9	+1,172%	1,030 of 1,044	Dromon Bureau of Shipping	A

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.