6S70ME-GA10
The MAN 6S70ME-GA10 is a six‑cylinder, low‑speed two‑stroke main engine delivering up to 48 480 kW at 91 rpm, notable for its dual‑fuel capability (HFO/VLSFO/MDO and ethane/LNG) and Tier III emissions compliance.
Engine Specifications
Inspector Detail
✓ verified
▸
Designation decoded
6 stands for 6 cylinders, S for Super-Long-Stroke, 70 for 700 mm bore, ME-GA for electronically controlled two-stroke engine with ethane-capable gas injection, 10 for Mark 10.
Background
The S70ME-GA10 with 6 cylinders is a medium-to-large dual-fuel engine for VLEC/VLGC. S/B 4.0 at 700 mm. 6 cylinders for good power and vibration behavior.
Calculated metrics
Inspector checklist
- Cylinder liners: S/B 4.0 at 700 mm — side forces, gas cold corrosion wear
- Piston rings: Gas lubrication conditions
- Cylinder lubrication: BN adjustment, quill flow at 700 mm
- Gas injection valves: Tightness
- FGSS: Compressor, safety
- Gas detectors
- ME control: FIVA, HPS/HCU, EICU
- Gas/diesel changeover
- Safety logic
- Scavenge air box: Accessible at 700 mm
- Turbocharger: 1-2 TC
- Exhaust temperature across 6 cylinders
Logbook reference values
| Parameter | Expected | Deviation means |
|---|---|---|
| Exhaust temperature by cylinder | 320–380 °C (gas); 350–420 °C (diesel) | Spread >15 °C → check gas/pilot |
| Gas injection pressure | 250–300 bar | Deviation → compressor/valve |
| Pmax | ±2 bar cylinder balance | Deviation → control system |
| Cooling water temperature | 80–85 °C (keep >65 °C even in gas operation) | Too low in gas operation → cold corrosion wear risk |
Common Failure Modes
Expert tips
- 💡 6×S70ME-GA10: Quill checks at 700 mm in gas operation — lubrication requirements differ from diesel, adjust feed rate
- 💡 Gas/diesel changeover at 700 mm: Slow transition recommended — thermal shock during fast switchover can damage liner and piston crown
- 💡 VLGC use: Boil-off gas management is operationally decisive — track gas supply pressure and temperature in the logbook
Related components
Classification & regulatory
IMO Tier II/III. IGC Code. SOLAS. MARPOL — nearly SOx-free with gas.
Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.
Other Cylinder Configurations 15
Components & Design
Component data being added…
Technical Data
🤖 Ask about this model
One free question — answered like a marine engineer. No account needed.
Suppliers & Spare Parts
Direct links to manufacturer, datasheet, spare-parts portal and dealers — request access below.
📄 Request sourcing links & documentsCases, daily reports, timesheets and AI troubleshooting in the OceanSphere Marine app — free for 14 days.
Start free trial →Find manufacturers, repair shops and spare-part dealers in the Maritime Network — our global company directory.
Maritime Network →