The Ng was a starship, a civilian operated vessel of Federation registry in the 24th century. In the 2370s decade, the Ng was commanded by Captain Hawkins. The Ng was in the Bajor sector during the Iconian gateway outbreak in the year 2376, and was mobilized to assist in the evacuation of Europani settlers after Europa Nova colony was irradiated by toxic emissions from a Malon export vessel that was deposited in that world's star system.
The Ng shuttled several shiploads of refugees from the Europani system to Starbase Deep Space 9 where quarters were converted into shelters for the inhabitants while their colony was decontaminated. On one return trip, Ezri Dax ordered that Ng would transport an industrial replicator from DS9's cargo bay to assist in the creation of shelters on Bajor, temporarily allocating the replicator to Vedek Eran, anticipating the device would be returned in a week to be taken to its original destination, Cardassia Prime, by the USS Hood. A further catastrophe was averted when a section of DS9 that had previously been outfitted with life support settings for methane-breathing Plexicans was hurriedly reconfigured for oxygen breathers, since the Ng was bringing a shipload of refugees for that section. (DS9 - Gateways novel: Demons of Air and Darkness)