UK-based Osbit Ltd is to deliver an innovative boat landing and access system for a jack-up accommodation vessel destined for Dong Energy’s Hornsea Project One offshore windfarm.
The boat landing system has been commissioned by Aberdeen-based Gulf Marine Services (GMS) UK Ltd and will be installed on one of its self-elevating, self-propelled, dynamically positioned ‘large-class’ accommodation vessels.
GMS required the development of a system to facilitate crew transfers to and from a jacked-up vessel to crew transfer vessels (CTVs) and offshore substations.
Utilising a unique access tower with an integrated CTV boat landing, technicians will be able to safely access transfer vessels regardless of whether the accommodation vessel is in a floating position or has been jacked-up to a pre-determined deck height of 21 m above sea level.
Osbit’s system, in accordance with GMS’ requirements, is integral to allowing work crews to remain offshore, rather than making daily trips to and from shore and will facilitate up to 50 crew transfers each day. The vessel, and its sister accommodation vessel, will be deployed 120 km off the Yorkshire coast.
The boat landing system will be raised and lowered into position using the jack-up’s crane and will have a waiting area and vessel interface that mirrors the buffer and ladder units found on traditional turbine transition pieces.
Brendon Hayward, managing director of Osbit Ltd, said “This boat landing system enables safe and efficient crew transfer, with minimal operational interference. The versatility of the system ensures transfers can take place without being affected by the jack-up vessel height and therefore won’t interfere with operations or substation access. As a result, the vessel can become a hub for technicians working on the substations or turbines, delivering more efficient and cost-effective use of the project’s offshore accommodation provision, while maintaining safety at all times.”
Gulf Marine Services chief executive officer Duncan Anderson said “The boat landing system we are producing in tandem with Osbit is the first of its kind. The system gives our barges the ability to safely transfer personnel from crew transfer boats while remaining jacked up on location with the requisite air gap. It will reduce non-productive time for our client while enhancing and improving safety and comfort for workers offshore who need to access offshore wind transition stations for hook up or maintenance.”