Rescuers search for missing after deadly Hong Kong ferry crash . Hong Kong police charge two ferry captains with manslaughter . Follows fatal ferry collision last year that left 39 people dead . Involved passenger ferry and vessel carrying people to National Day Parade . Narrow shipping lanes leading into Hong Kong 's main harbour are some of the busiest in Asia .
Hong Kong police charge two ferry captains with manslaughter . Follows fatal ferry collision last year that left 39 people dead . Involved passenger ferry and vessel carrying people to National Day Parade . Narrow shipping lanes leading into Hong Kong 's main harbour are some of the busiest in Asia .