Carl Lizana Jr., whose family owns the White Cap restaurant, calls a popular menu item "the world's best seafood platter." He insists it will be served again at the restaurant that offered a memorable view of the Gulfport Small Craft Harbor.    Fresh Mississippi Sound and Gulf shrimp are a specialty, as are the pressed, dressed po-boys.
   "Yes, we're gonna rebuild," said Lizana. "The White Cap is an institution in Gulfport, and the oldest seafood restaurant on the Coast. It's been here in one form or another since 1929 and is probably one of the oldest restaurants in Mississippi."
   The year it opened, the trolley traveled the beach and made a stop and turn at what is now the VA medical facility, and that's where Bob Storry put the eatery. It went through several locations and owners before moving to the present harbor site in 1969.
   "The White Cap survived the '35 hurricane, the '47 and Camille in '69," Lizana said. "It was always rebuilt. It will survive Katrina."
   Lizana's sons, Buck and Ray, now run the White Cap. The family was Katrina-whammied with their homes and other businesses, including Gulfport's Aunt Jenny's on the Beach (lost) and Anthony's in Ocean Springs (repairable). The good family news is that the original Aunt Jenny's Catfish House in Ocean Springs has already reopened.