X0202 4 2005-03-31 0 0000202947 CAPITAL PROPERTIES INC /RI/ CPI 0001253369 CHRZANOWSKI RONALD P 0 1 0 0 President Class B Common Stock 2005-03-31 4 C 0 300 0 D 0 D Class A Common Stock 2005-03-31 4 C 0 300 0 A 3725 D The reporting person beneficially owns 3,725 shares of the issuer's Class A Common Stock of which 3,300 shares are held directly by the reporting person and 425 shares are held in an IRA. This report is being filed voluntarily by the reporting person in connection with the automatic conversion of all of the issuer's Class B Common Stock on a one-for-one basis to shares of the issuer's Class A Common Stock which occurred pursuant to the terms of the Class B Common Stock on March 31, 2005. This conversion did not result in any change to the percentage ownership of the reporting person. Margaret D. Farrell (Attorney-in-fact for Ronald P. Chrzanowski) 2005-04-13