Specsvision Shapoli

ShaPoLi (Shaft Power Limitation) is a mandatory maritime system that restricts a ship’s engine power output to help it meet Energy Efficiency Existing Ship Index (EEXI) regulations

Dredging Control System, Dredging Positioning System

ShaPoLi (Shaft Power Limitation)

ShaPoLi (Shaft Power Limitation) is a mandatory maritime system that restricts a ship’s engine power output to help it meet Energy Efficiency Existing Ship Index (EEXI) regulations, reducing fuel use and greenhouse gas emissions by limiting propeller shaft power to a calculated maximum. It works by monitoring shaft power and issuing alarms or automatically reducing engine output, with an overridable function for emergencies that logs all events for compliance reporting.

EEXI Regulations:

IMO’s 76th Marine Environmental Protection Committee Resolution 328 (MEPC.328(76)) adopted Annex VI to the Convention on the Prevention of Marine Pollution (MARPOL), which includes amendments to mandatory objective-based technologies and operational measures to reduce carbon concentration in international transport.

Under this amendment, international vessels with a total tonnage of 400 tons or more are MEPC.

EEXI values shall be calculated and applied in accordance with the guidelines 333 (76). The target vessel shall satisfy the calculated EEXI value or less.

If the EEXI value is not satisfied, the vessel shall satisfy the EEXI value by means of MEPC335 (76) with countermeasures such as shaft/engine power limitation, energy saving device repair, etc.

Shapoli System Features

Easy to install by using simple bracket arrangement -No shaft modifications
Robust design for operation in particular environments
Various outputs available for all data logging requirements
Maximum shaft speed of 1500rpm for all shaft sizes
High accuracy and repeatability
Optional thrust measurement
Not affected by any pollutional of hazardous materials
Digital data transmission for clean reliable data
Simple calibration setup for increased accuracy of torque data
Lage on-shaft tolerance makes it easy installation
Single or dual shaft applications
maintenance free operation owing to no mechanical wear

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