120+
ShaPoLi installations
100%
class approved
OEM
trained engineers
24/7
retrofit support

📌 what is shapoli?

EEXI Compliance · Power Limitation · Override

Shaft Power Limiter (ShaPoLi) is a system that limits the maximum power delivered to the propeller to ensure compliance with IMO EEXI and CII regulations. It can be implemented as a software function within the Engine Control System or as a stand-alone unit. Our team provides complete solutions including:

  • ✓ Shaft Power Monitoring & Limiting
  • ✓ Engine Power Limiter (EPL) Integration
  • ✓ Torque Sensor Installation (strain gauge, magnetic)
  • ✓ RPM and Fuel Index Limitation
  • ✓ Override Function per MEPC.335(76)
  • ✓ Class Approval (ABS, DNV, LR, BV, RINA)
  • ✓ Retrofit to Existing Vessels
  • ✓ Integration with IAS / PMS / AMS

⚙️ implementation methods

Software · Hardware · Hybrid

Software-based ShaPoLi

  • ✓ Integrated in Engine Remote Control System
  • ✓ Fuel Index Limitation (electronic engines)
  • ✓ RPM Limitation via Governor
  • ✓ Suitable for ME / ME-C / ME-B engines
  • ✓ No additional hardware required
  • ✓ Upgrade of existing control software

Hardware-based ShaPoLi

  • ✓ Stand-alone power limiting unit
  • ✓ Torque sensor on intermediate shaft
  • ✓ Interface to existing control system
  • ✓ Suitable for older vessels / mechanical engines
  • ✓ Override panel with tamper-proof logging
  • ✓ Class-approved hardware (ATEX/Marine)

Platforms We’ve Integrated With:

  • ✓ Kongsberg K-Chief 700
  • ✓ ABB Ability™ Marine Remote Control
  • ✓ Siemens S7-1500F / WinCC
  • ✓ Wärtsilä UNIC / ProControl
  • ✓ MAN CEON / CoCoS EDS
  • ✓ NORIS Group GmbH systems
  • ✓ Lyngsø Marine TMCS
  • ✓ Praxis Automation
  • ✓ Selma Control Systems

🔩 components & hardware

Torque Sensors · Processors · Override Panels

Shaft Power Measurement

  • ✓ Strain Gauge Telemetry Systems
  • ✓ Magnetostrictive Torque Sensors
  • ✓ Surface Acoustic Wave (SAW) Sensors
  • ✓ Optical Torque Measurement
  • ✓ RPM Pickups (MPU, Encoder)
  • ✓ Signal Conditioning Units
  • ✓ Telemetry Receiver / Antenna Kits

Control & Override

  • ✓ ShaPoLi Logic Processors (PLC-based)
  • ✓ Override Panel with Key Switch / Password
  • ✓ Override Counter with Tamper-proof Logging
  • ✓ Bridge Indicator (Power Limit Active)
  • ✓ Interface to ECR / Alarm System
  • ✓ Data Logger for Compliance Records
  • ✓ Remote Monitoring / SCADA Integration

📋 compliance & class

IMO EEXI · MEPC.335(76) · Class Societies

  • ✓ MEPC.335(76) Override Requirements
  • ✓ Override Counter with Non-resettable Log
  • ✓ Bridge Alert for Override Activation
  • ✓ Automatic Return to Limited Mode
  • ✓ Class Type Approval (ABS, DNV, LR, BV, RINA, CCS)
  • ✓ Onboard Survey Assistance
  • ✓ Documentation for EEXI Technical File
  • ✓ Annual / Periodic Testing Procedures

Approval experience: We’ve successfully obtained class approval for ShaPoLi installations on VLCC “Euronav” (ABS), Bulker “Berge Bulk” (DNV), Container Vessel “MSC” (LR), and FPSO “SBM” (BV). We handle the entire approval process.

🔧 retrofit process

From Survey to Sea Trial

Our Retrofit Steps

  • 1. Onboard Survey & Power Calculation
  • 2. Selection of Method (software/hardware)
  • 3. Engineering & Class Documentation
  • 4. Hardware Installation (if required)
  • 5. Software Configuration / Upload
  • 6. Calibration & Function Testing
  • 7. Override Function Validation
  • 8. Sea Trial & Power Verification
  • 9. Class Survey & Final Approval
  • 10. Handover & Training

Recent Projects

  • ✓ VLCC “New Prosper” (ABS) – Kongsberg K-Chief software ShaPoLi
  • ✓ Bulker “Federal Hunter” (DNV) – Strain gauge + stand-alone limiter
  • ✓ Container “Maersk Edinburgh” (LR) – ABB Remote Control upgrade
  • ✓ FPSO “Cidade de Itaguaí” (BV) – Hybrid torque + PLC limiter
  • ✓ Chemical Tanker “Stolt” – MAN CEON software limitation
  • ✓ Jack-up Rig “Aramco” – ShaPoLi for generator/power limitation

🔑 override function

MEPC.335 Compliant Override

Our ShaPoLi systems include a fully compliant override function per MEPC.335(76):

  • ✓ Override accessible only to Master / Chief Engineer
  • ✓ Tamper-proof override counter (non-resettable)
  • ✓ Visual indication on bridge when override active
  • ✓ Automatic reset to limited mode after 30 min (or configurable)
  • ✓ Logging of override events with timestamp
  • ✓ Interface to VDR / onboard computer
  • ✓ Key switch / password / biometric options
  • ✓ Audit trail for class inspection

🌍 global shapoli support

Vessels We Serve

Vessel Types

  • ✓ VLCC / Supertankers
  • ✓ Bulk Carriers (Capesize, Panamax)
  • ✓ Container Ships (Feeder to ULCS)
  • ✓ LNG / LPG Carriers
  • ✓ Chemical Tankers
  • ✓ FPSO / FSO
  • ✓ Offshore Vessels (AHTS, PSV)
  • ✓ RoRo / PCTC
  • ✓ Cruise / Passenger

Global Locations

  • ✓ UAE (Dubai, Fujairah, Abu Dhabi)
  • ✓ India (Mumbai, Kochi, Chennai)
  • ✓ Singapore / Malaysia
  • ✓ China (Shanghai, Dalian, Guangzhou)
  • ✓ Korea (Busan, Ulsan)
  • ✓ Europe (Rotterdam, Hamburg, Piraeus)
  • ✓ Middle East (Bahrain, Qatar)
  • ✓ Worldwide shipyards / ports

👥 Our team: Includes engineers who worked on the first ShaPoLi retrofits in 2021. We’ve trained with Kongsberg, ABB, and MAN on EEXI compliance. We speak class language and ensure smooth approval.

⚙️ 24/7 shapoli support

Need ShaPoLi retrofit or
EEXI compliance?

Our ShaPoLi specialists are ready 24/7 for retrofit, calibration, and class approval support. We handle the entire process from survey to sea trial. Contact us today.

Email: service@seanav.org | Website: www.seanav.org | 24/7: +971 50 XXX XXXX