FEATURE SPONSOR
WORKBOATS
North Sea considerations for workboats
For the majority of conventional-sized vessels issued with certification under international frameworks there are few significant differences between the North Sea jurisdictions under consideration when it comes to requirements for conventional cargo and passenger vessels.
However, offshore industry vessels, of which there is a broad mix spanning different activities, fall into more specialised categories not well aligned with the requirements of conventional deep-sea shipping and thus the interpretation and application of international framework varies between flag states.
WINDFARM MAINTENANCE VESSELS Variously also known as service and maintenance vessels, wind service operation vessels or simply offshore service vessels (as used in other offshore industries), this vessel type is a relatively recent addition to the offshore wind industry which has been introduced as larger windfarms are constructed further away from shore-based logistics.
SELF-ELEVATING UNITS
Self-elevating units, or jack-ups, are used for a variety of development, construction and maintenance activities in offshore wind which often form the principal activities in establishing and maintaining the windfarm.
OFFSHORE SERVICE CRAFT Small service craft (of less than 24m in Load Line length) are not subject to the majority of international conventions. In general they are engaged on domestic voyages as commercially operating cargo vessels and therefore are certificated under national legislation. It is increasingly common for service craft certificated under national legislation of one flag state to operate within the jurisdiction of a different port and/or coastal state.
SMALL SERVICE CRAFT STANDARDS A brief comparison of the design and construction standards for small service craft to highlights similarities and differences between the national requirements. For the sake of simplicity, and to focus on the requirements relevant to the majority of the service craft market, this comparison only considers the requirements for small service craft of less than 24m in Load Line length (i.e. not subject to Load Line).
For Denmark, the UK and the Netherlands this restriction is explicit in the national requirements, while in the case of the German standard circular the size restriction for applying the standard is based on gross tonnage. However in practice there are very few vessels exceeding 24m in Load Line length which are also less than 100 GT.
RULES ACCEPTANCE
All jurisdictions will accept the rules of a recognised Class Society for hull construction standards, though the UK may also accept equivalent standards or first principles calculations.
Martin Collingwood Andrew Jackson Solicitors
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www.windenergynetwork.co.uk
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