ts, or 1.6 percent, to close at $25.60 Wednesday in New York and Royal Caribbean shares fell 16 cents to $16.25. U.S.-traded shares of London-based Psamp;O Princess surged $2.55, or almost 10 percent, to close at $28.95. EFTA00578633 BECOME A MEMBER AT CBS MARKETWATCH Signing up is quick, easy and FREE! As a