I think my friend jim sent you photos of my build of her, but will reiterate that although I actually made grp moulds for both the hull and cabin from the originals that went to Guernsey, both the original and the grp boats were built to have the tops lifting off as one piece.
the whole cabin including the aft structure housing the windows comes off as one piece. the well deck has removable engine covers made from plasticard and split floor with a removable long beam to act as central support.
I built both those models on the stand for Guernsey St Johns Ambulance marine division. the ST200 was their first boat many years ago, sadly broke her moorings in a storm and wrecked within the harbour.
i'll send you the photos again if you wish..