This vessel was scrapped by Luguria Maritime at Milton Creek, Sittingbourne in 1986. Her sister COMMUNICATOR (ex-GARDLINE SEEKER) was a pirate radio ship used by RADIO LASER 730 at some point but she was scrapped at Orkney in 2007 - see IMO 5351923 on this site. Both were built as cargo ships.

I think this became a north sea pirate radio ship which eventually sank during heavy weather.
i sailed as 2nd mate when it was a survey vessel

Type of ship : Cargo ship|IMO number : 5302738|(Ex)-Name's of ship :RYFYLKE( Stavangerske DS, Stavanger, Norway)-->73 TRACKER(Gardline Sh Ltd, Lowestoft, Uk) - 76 GARDLINE TRACKER|Callsign: GUCS|
Last known flag: UK|Length overall: 53.0 m|Beam: 9.0 m|DWT: 524 / 439 GT|Main Engine:KHD/ 900 bhp|Year of build :1953|Builder/Place:Abeking & Rasmussen/Lemwerder|Yard No:4793