| Manufacturer / Brand | E.P. Barrus (Shire Marine) |
| Model Designation | Shire 90 Keel-Cooled |
| Engine Type | 4-Stroke Heavy-Duty Commercial Canal Marine Diesel |
| Cylinder Configuration | Inline-4 |
| Total Displacement | 3.3 Liters (203 cu in) |
| Bore x Stroke | 98.0 x 110.0 mm (3.86 x 4.33 in) |
| Aspiration & Charge Air | Turbocharged with Water-Cooled Charge Air Intercooler |
| Cooling System Architecture | Keel-Cooled Heavy-Duty Closed Skin-Tank System with High-Volume Pump |
| Continuous Power Rating (P1) | 80 BHP (60 kW) @ 2,400 RPM |
| Maximum / Intermittent Power (P3/P4) | 90 BHP (67 kW) @ 2,600 RPM |
| Fuel Injection Platform | Mechanical Direct Fuel Injection with In-Line Multi-Plunger Pump and Governor |
| Cylinder Head Metallurgy | Monobloc Cast Iron Cylinder Block with Cast Iron Overhead Valve (OHV) Cylinder Head |
| Cylinder Liners | Cast Iron Engine Block with Integrated Parent Bores |
| Flywheel Housing & Flywheel | SAE 4 Housing with Heavy-Duty Marine Torsional Damper Plate |
| Electrical System & Ground | 12V Negative Ground Marine Electrical System |
| Starter & Alternator Output | 12V 2.5 kW Electric Starter / Dual Alternators (12V 50A Starter + 12V 240A Domestic) |
| Lube Oil Sump Capacity | 10.5 Liters (2.77 US gal) |
| Engine Coolant Capacity | 12.0 Liters (3.17 US gal) |
| Dry Weight (excl. gearbox) | 295 kg (650 lbs) |
| Overall Dimensions (L x W x H) | 890 x 580 x 730 mm (35.0 x 22.8 x 28.7 in) |
| Emissions Certification | RCD 2 (Directive 2013/53/EU) / EPA Tier 4 / EU Stage V Non-Road |
| Fuel Compatibility | Ultra-Low Sulfur Diesel (ULSD No. 2), Automotive Diesel (EN 590), B7 Biodiesel |
| Transmission / Outdrive Compatibility | Bare Engine Bobtail Keel-Cooled - Compatible with PRM (PRM 280 / PRM 500) and Twin Disc Transmissions |
| Factory Warranty Period | E.P. Barrus Shire 3-Year Limited Inland Leisure / 2-Year Commercial Warranty |
| Application Research | Large commercial passenger vessels on inland waterways, oversized European hotel barges (up to 120-150 tons), tidal estuary tugs, and high-demand commercial freight pushers. |
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