One name strikes fear among Spanish ship captains plying the coastal Caribbean waters of the Spanish Main: Barracuda, the notorious scourge of the seas. Yet it was not always so . In this lavish swashbuckler, Casablanca's Paul Henreid stars in a change-of-pace role as Capt. Laurent Van Horn, a Dutch trader in the Caribbean who is wrongly imprisoned by the Spanish governor (Walter Slezak) and sentenced to hang for trespassing. But Van Ho