The RMAS removed the lifeboats, when they took over the R's from the ocean towing group, although they had Robust from new, on the grounds of stability though I suspect there was a financial influence. They could achieve a bollard pull of 50tons , but this could only be sustained for 15 minutes, then the power was some what reduced to avoid overheating the engines. The bow fender arrangement was altered in the early 1980's as and when they went to refit, Robust was first as she was used mainly as a harbour tug unlike the other two. In fact Robust in Devonport was a very useful tug, strapped alongside the quarter of a type 22 she could easily take it cold move up the Hamoaze to secure it to a buoy.
But there overall problems where stability, and the wrong type of towing winch fitted to them, they where originally supposed to have been small versions of the Englishman, that is until the authorities in Bath stuck there noses in. But there decks like all seagoing RMAS vessels where Olive Green, Humbrol 88 is the colour I use.