Corvus Blue Marlin

The Blue Marlin is a unique ESS where Corvus Energy has combined its industry leading research with the development capabilities and knowledge gained from having the largest global installed base of energy storage systems solutions. The result is a new cutting edge ESS with performance nearing a capacitor with improved energy density.

The Corvus Blue Marlin is designed for use in any application in need of short peaks of high power. It has industry-leading design with no manual connections, enhanced reliability and the highest level of safety.


Blue Marlin is ideal for applications that are in need of both energy and a high amount of power, moving large amounts of energy at an inexpensive lifetime cost per kWh. Typical vessel-types are:

  • Offshore Drilling Platforms
  • Jack-ups
  • Semi-submersible rigs
  • Drilling vessels


  • Highest C-rate in the industry, 550C peak
  • Very long life and minimal self-discharge
  • Designed for voltages up to 1094 VDC
  • Low installation and commissioning time
  • Low life cycle cost
  • Enhanced reliability with contained power connections
  • Very Flexible and modularised design
  • Passive single-cell Thermal Runaway protection
  • Scalable capacity and voltage according to vessel requirements
  • Industry-proven Battery Management System (BMS)
  • Remote monitoring capabilities
  • Enhanced EMI immunity design for maritime environment

Technical Specifications

Performance Specifications
C-Rate - Peak (Discharge / Charge)546C / 546C
C-Rate - Continuous (Discharge / Charge)196C / 196C
System Specifications
Single Module Size / Increments109 Wh / 137 VDC
Single Pack Range327-873 Wh / 410-1094 VDC
Max Power Gravimetric Density - Pack298 W/kg (Continuous)
Max Power Volumetric Density - Pack293 W/l (Continuous)
Example Pack - 8 Modules - 1094VDC
Power, Peak and Continuous497 kW and 179 kW
Energy873 Wh
VoltageMax: 1094 VDC | Nom: 893 VDC | Min: 634 VDC
DimensionsHeight: 1874 mm | Width: 434 mm | Depth: 740 mm | 600 kg
Safety Specifications
Thermal Runaway anti-propagationPassive cell-level thermal runaway isolation with exhaust gas system
Fire Suppression RecommendedPer SOLAS, class and Corvus recommendation
Short Circuit ProtectionFuses included
Emergency Stop CircuitHard-wired
Ground Fault DetectionIntegrated
Disconnect CircuitOver Voltage, Under Voltage, Module Internal Leak
Disconnect Switchgear RatingFull load
General Specifications
Class ComplianceDNV
Type ApprovalPending
Ingress ProtectionSystem: IP44
CoolingLiquid Cooling
Vibration and ShockDNVGL-CG-0339, IEC 60068-2-6
EMCIEC 61000-4, IEC 60945-9, CISPR16-2-1
Environmental Specifications
TemperatureDNVGL-CG-0339, Class B
HumidityDNVGL-CG-0339, Class B
Ambient Temperature5 - 45 degC, up to 95% RH
Short Circuit Capacity
BOL5°C - 2.3kA, 25°C - 5.5kA, 45°C - 6.4kA
EOL5°C - 2.1kA, 25°C - 5kA, 45°C - 5.8kA
Battery Management System
Battery Management SystemCorvus Gen. 4
Control InterfaceModbus TCP

Market Segments

Cruise and Ferry

Electric and Hybrid RoPax, Electric and Hybrid Car Ferries, Hybrid Powered Cruise Ships, Electric and Hybrid Ferries, Electric and Hybrid Yachts, Electric and Hybrid Passenger Ferries

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Corvus is the leading provider of marine battery energy storage systems for maritime applications, including electric and hybrid tugboats and workboats.

Tugs and Workboats

Electric and Hybrid Tugboats, Electric and Hybrid Workboats

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Offshore Wind

Non Vessel Wind Installations, Offshore Wind Installation Vessels, Offshore Wind Service Vessels

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Offshore Oil & Gas

DP2 vessels, DP3 Vessels, Oil and Gas, Offshore support vessels

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Fishing and Aquaculture

Fish farm support vessel, Fish farms, Fishing, Fish Farming and Aquaculture

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merchant vessel


Deep sea vessels, Hybrid short sea merchant vessels

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Corvus Energy is the leading provider of marine energy storage systems, including solutions for hybrid port equipment and electric vessel charging.


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Subsea Heave Compensation, ROV and Seabed

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