Have a read of this unfortunate incident; if you only hold an RYA Powerboat level 2 certificate, have you considered the RYA Tender Operator course and/or RYA Advanced Powerboat course; both which would potentially up-skill and better prepare you to carry out your duties...
http://www.dockwalk.com/Essentials/DockTalk.aspx?tid=186728&g=posts&t=186728
Find out more about the courses by clicking below: