With fuel accounting for 50–70% of total operating expenses, precise propulsion management is no longer optional - it is a regulatory and financial mandate. The ShaPoLi (Shaft Power Limitation) system is the critical technical bridge that allows vessels to meet the IMO’s Energy Efficiency Existing Ship Index (EEXI) requirements without necessitating permanent, mechanical engine de-rating.
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NULSTIL
Shaft Power Limiter
EDIT ECO 8 ShaPoLi
The ShaPoLi ECO 8 uses an existing torque meter to limit the shaft power of your ship, thereby reducing the CO2 emissions in accordance with the IMO EEXI regulation. ECO 8 will help you monitor and record the shaft power and set the power limitations using any output signal. The solution has several type approval and OMM book certifications making it an obvious choice for your vessel.
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The Role of ShaPoLi in Regulatory Adherence
A ShaPoLi system acts as a "digital governor," monitoring real-time power output to ensure a vessel does not exceed its calculated EEXI maximum. Unlike permanent mechanical limitations, a ShaPoLi system provides the flexibility to access full engine power in emergency scenarios, provided the override is logged according to MARPOL Annex VI standards.
The Onboard Management Manual (OMM) & Audit Readiness
Compliance is not merely about hardware; it is about documentation. In accordance with MEPC.335(76), every ShaPoLi installation must be accompanied by a vessel-specific Onboard Management Manual (OMM). Insatech provides a comprehensive OMM package that remains permanently on board for Class and Port State Control (PSC) inspections. Our OMM includes:
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Technical System Description: Detailed specifications of the limitation unit.
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Maximum Certified Shaft Power: Clearly defined limits based on the EEXI Technical File.
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ShaPoLi Record Book: A dedicated ledger for recording maintenance, calibrations, and authorized power overrides.
Global Classification & Type Approvals
Our solutions are engineered to meet the stringent IACS Rec. 172 regulations. Insatech provides systems that are fully Type Approved and OMM-certified by the world’s leading authorities:
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Type Approved & OMM Certified: ABS, Bureau Veritas (BV), DNV, Lloyd’s Register (LR), and RINA.
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OMM Book Certified: CCS, ClassNK, and Korean Register (KR).
Why Partner with Insatech for EEXI Compliance?
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Vendor-Neutral Integration: Designed for rapid installation and seamless communication with a wide variety of existing torque meter brands.
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Precision Alerting: High-fidelity monitoring ensures that the bridge is alerted before a breach occurs, allowing for proactive adjustment.
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Lifecycle Expert Support: Beyond hardware, we provide the crew training and technical support necessary to manage the ShaPoLi Record Book and ensure the vessel is always "survey-ready."