1. Increase in personnel safety during turbine access Simultaneous increase in accessibility Employment of small and middle vessels Compact and easy building method of the system max. weight of the system approx. 4 tons Use of proven technology - High security for the personnel - High reliability - Reduced transfer costs The first offshore wind park experiences shows that the availability depends strongly on the accessibility. The access depends considerably on the wave heights. A safe Boatlanding is usually no longer possible for significant wave heights of 1,5 - 2.0 meters above. Apart from the ability to access also with large wave heights the economy of the assigned system is crucial factor for the selection of the system. This depends considerably on the necessary investments, the possible additional load of the vehicle, the travel times as well as the operating cost such as personnel expenditure, fuel consumption and maintenance cost. These factors depend considerably on the design of assigned service vessels. Momac developed two offshore access systems, MOTS – a ship mounted active system, and SLILAD – the turbine mounted a passive system. First function tests were locked successfully. A promotion as well as a prototype from MOTS is in manufacturing, the necessary security concepts are in the test and permission phase. Momac is looking for a pilot for testing MOTS and SLILAD. For further information contact Stefan Leske at the conference. Abstract Momac-Offshore-Access-Systems MOTS & SLILAD, improve the safety of turbine personnel transfer momac GmbH & Co. KG, Germany PO 208 Results Objectives Direct contact to momac at the conference Phone: +49 172 989 0 717 Direct contact to momac at the conference Phone: +49 172 989 0 717 MOTS (Momac-Offshore-Access-System) European Offshore Wind 2009 Conference & Exhibition, 14 – 16 September, Stockholm, Sweden MOTS: Active System I Ship Mounted Self-stabilizing system that provides safe access to offshore structures by actively compensating for the motions of the vessel Combination of proven robotics technology and real time motion measurement equipment Installation possible in small and fast vessels without Dynamic Positioning (DP) Can be used on existing boatlandings without modification Safe system, even in case of power breakdown or other failures Low-maintenance and seaworthy construction SLILAD: Passive System I Turbine mounted Increases the security of boadlanding with small vessels No relative movement vessel to ladder and ladder to platform SLILAD compensates for the vertical movement of the vessel through a locked connection element Prior stepping on the SLILAD the ladder is fixed to the vessel, after stepping on the SLILAD the ladder becomes fixed to the platform Automatic tide level adjustment, thereby no mussels or other vegetation on the used part of the ladder Simple and seaworthy construction Movement compensation: no limits Electrical connection:none SLILAD (Sliding Ladder) Movement compensation: 6 degrees of freedom max 3.200 mm vertical + dumping of the vessel System weight: app. 3.400 kg Electrical connections: 3-Phase 400VAC, 14 kVA The compact design of the robot-based MOTS makes - an installation possible even on fast service catamarans, whereby - the accessibility to the wind-turbine can be substantially increased and - the journey times can be kept as short as possible