North Korea reverses decision to publicly register submarines  

washington — In an unexplained and puzzling move, North Korea this week placed 13 of its several dozen known submarines on a public list maintained by an international maritime agency, only to have them removed a day later. North Korea on Tuesday registered 11 Sang-O II-class submarines, as well as two more sophisticated vessels, with the International Maritime Organization's (IMO) Global Integrated Shipping Information System (GISIS), even though military craft are not normally listed on the registry.