Canada built 47 foot Coast Guard boats that are self righting in about 30 seconds. The crew have to be strapped into their seats with multiple harnesses in rough seas. Don't try this in your boat.
Don't think they are Aruns. The Arun was either 52' or 54'. This states 47'. The Waveney class 44' as used by the RNLI a few years back was based on a USCG boat.