Standards Development

Scope

This guideline specifies provisions for the design, installation, operation, maintenance and testing of HVOC systems for transfer of electric power to hybrid and battery electric vessels, for the purpose of supplying electrical power to the vessel's battery for charging, electric propulsion for positioning, and/or auxiliary loads.

This guideline is applicable to:

— installations on board the ship and on the offshore supply facility including offshore -to-ship connection and interface equipment,

— ships requiring 1 MVA or more or ships with HVOC capability,

— alternating current (AC) power transfer,

— SOVs and CSOVs, and intended to sufficiently address other ship types,

— in principle both autonomous and manned ships, but focuses on manned ships,

— transformers/reactors,

— frequency convertors,

— ship distribution systems,

— protection, control, monitoring, interlocking and power management systems, and

— communication between equipment on offshore supply facility and ship

The guideline is not applicable for: 

— low voltage solutions (e.g for lighter vessels),

— direct current (DC) power transfer,

— inland navigation vessels;

— electrical power supply during docking periods, for example dry docking and other out -of-service maintenance and repair,

— shore power connection, although this may have considerations which are associated to HVOC, and

— systems to be operated by an ordinary person (3.18).

Additional or alternative requirements can be imposed by national administrations or the authorities within whose jurisdiction the ship is intended to operate or by the owners or authorities responsible for an offshore power supply or distribution system. 

NOTE High Voltage Shore Connection systems are covered by IEC/IEEE 80005-1.

Purpose

The intention of this document is to define requirements that support, with the application of suitable operating practices, efficiency and safety of connections by compliant ships to compliant high voltage offshore power and charging installations through a compatible grid-to-ship connection. This document provides details on offshore power and charging solutions for hybrid or fully electric offshore vessels, such as Service Operation Vessels (SOVs) and Commissioning Service Operation Vessels (CSOVs).

More information can be found in the Introduction of the attached document.