Hi
I was crew on the Robust for 5 years when she was based at Devonport,I will get some pics for you if you still need them,another god source for info would be the RMAS Association Devonport who have a web site and a facebook site which has lots of photos of loads of RMAS vessel.As far as I am aware Rollicker sank off Iraq ,Robust was for sale in Florida for conversion to luxury yacht and Roysterer I am not sure about.