Still not certain of her identity. There are several RYOUN MARUs. Eliminating those with known fishery numbers or belonging to wrong port (as HK1-113 must be a Hokkaido registration), there are still:
RYOUN MARU No.11 - IMO 8838245 - listed as sold to unknown buyers 6/2011 (insurers?)
RYOUN MARU No.12 - IMO 9038775
RYOUN MARU No.16 - IMO 8708062
RYOUN MARU No.53 - IMO 7126413
and may well be others of course without IMO numbers