I googled the Barbican 33 to find the disp. (13.230 lbs) and LWL (27' 4") information that is also required for calculating propeller information, I also found out that although the boat has a propeller pocket is can turn one that's 16" diameter. My calculations are.....
16 x 11 - 2 blade
16 x 8 - 3 blade
The numbers are for a fixed propeller, either should make hull speed if the engine is healthy, the 3 blade will perform a little better than the 2 under power.
Get your local 'Prop Shop' to confirm this information, they will normally adjust FOC if the propeller does not perform to their calculations.