^AAIC — C25:33 | Zulu Code

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Description

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Did you know

The Bergen C25:33 engine series was launched in 2002, building upon over 60 years of the company's experience in the 250mm bore engine segment.
The C25:33 is part of Bergen Engines' liquid-fueled engine offerings, sitting alongside the B32:40 and the more modern B33:45. It is an in-line engine, while the B33:45 also has V-engine variants.
The C25:33 is known for its compact footprint, excellent power-to-weight ratio, and modular 'Power Pack' design, which simplifies maintenance by allowing the cylinder head, liner, piston, and connecting rod to be replaced as a single unit. It also offers fuel flexibility, being approved for biofuels and methanol/ethanol-ready, with ongoing development for higher hydrogen concentrations and ammonia fuel concepts.

Model	Cylinder Bore (mm)	Piston Stroke (mm)	Power/Cylinder (kW)	Engine Speed (rpm)	Fuel Type
C25:33	250	330	320-333	900/1000	Liquid Fuel
B33:45	330	450	600	450-750 (propulsion), 720/750 (genset)	Liquid Fuel
C26:33	260	330	243-270	900/1000	Natural Gas

Sources: directindustry.com; wikipedia.org; bergenengines.com; rolls-royce.com; scribd.com; bergenengines.com; bergenengines.com; koedood.nl; bergenengines.com

Competitive Models

Similar models from other manufacturers — apple to apple.

^AAAA G50ME-C

G50ME-C is a MAN B&W 2S model, coded ^AAAA. Typical service: primary propulsion at sea; shaft drive to propeller. Instal…

^AAAE G95ME-C

G95ME-C is a MAN B&W 2S model, coded ^AAAE. Typical service: primary propulsion at sea; shaft drive to propeller. Instal…

^AAAD G80ME-C

G80ME-C is a MAN B&W 2S model, coded ^AAAD. Typical service: primary propulsion at sea; shaft drive to propeller. Instal…

^AAEA 6EY26W

Yanmar 6EY26W — a 6-cylinder medium-speed four-stroke main engine with 260mm bore. Compact design for coastal tankers, f…

^AAAF S50ME-C

S50ME-C is a MAN B&W 2S model, coded ^AAAF. Typical service: primary propulsion at sea; shaft drive to propeller. Instal…

Spares

Positions 1–12 are the same part on every engine and are safe to quote by code. 13 and 14 vary with cylinder count.

1Cylinder Liner — page under construction
2Piston — page under construction
3Fuel Injector Nozzle — page under construction
4Cylinder Head / Cover — page under construction
5Connecting Rod — page under construction
6Main Bearing — page under construction
7Bottom-End (Crankpin / Con-Rod) Bearing — page under construction
8Fuel Injection Pump — page under construction
9Fuel Injector (Complete) — page under construction
10Exhaust Valve — page under construction
11Inlet Valve — page under construction
12Piston Ring Set — page under construction
13Crankshaft — page under construction
14Camshaft — page under construction

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Code map

^A  A  I  C
 │  │  │  └── Model: C25:33
 │  │  └───── Make: Bergen Engines
 │  └──────── Equipment: Main Engine
 └─────────── System: ME, Propulsion & Steering