Dutch Harbor was the nation's top port for seafood landings in 2008 in terms of weight, according to the latest rankings from the National Marine Fisheries Service.it is the 20th straight year Dutch has held the No. 1 spot, an achievement made even more impressive given that last year's landings of 612.7 million pounds were down 21 percent from 2007.Pollock, used for products such as fish sticks an