Following a highly successful, positive identification of the vessel by 3SX, here's the revised entry for the description of this photo:

Fishing vessel 'Mar da Ericeira´, registration A-3330-C, undergoing a facelift at the NavalRia/Martifer shipyard at Aveiro.

Main characteristics:
Callsign: CUUS
LOA: 28.1m
Beam: not available
GT: 209 t
Main engine power: 588.33 kW
Hull: Metal
Year of Build: 1992
Builder: CARNAVE-Estabelecimentos Navais, SA (Portugal)
Flag: Portugal
Home port: Aveiro
Primary gear: Bottom otter trawls
Former names:
Maria Helena (until Apr 2006)