Sage, this video shows a ROV disconnecting a type of 'J-plate' from it's socket. The interesting part is about 7 minutes into the video. The 'J-plate' is being used to supply hydraulic power and control to a custom built cutting tool I believe. <a href="http://www.msgmarine.no/?div_id=12&pag_id=12" target="_blank">http://www.msgmarine.no/?div_id=12&pag_id=12</a>