While doing her inaugural cruise along the Eastern coast of the United States and Canada up to Québec City, "Norwegian Sky" temporarily ran aground in the Saguenay River on September 24, 1999. On its return to the mouth of the Saguenay, at about 11:30 local time, whales were observed in the St. Lawrence River. To prolong the whale-watching activity, the vessel was turned around but ran aground on the Bancs de l'île Rouge (Rouge Island Banks) before completing its maneuver. The vessel's stern made bottom contact with the shoal. The vessel slowed and the stern came to rest on the Bancs de l'île Rouge. At 12:06, the vessel was aground, listing 5.2º to port. As the vessel was unstable on the reef, the master requested assistance from the Canadian Coast Guard for a preventive evacuation of all passengers plus some crew members. The Marine Rescue Centre of Québec tasked different resources including whale-watching tour boats and the two provincial ferries normally crossing the Saguenay River. However, at the very last moment, with the assistance of a small Search and Rescue cutter and the high tide, "Norwegian Sky" was able to free herself from the reef and proceeded to deeper waters. The vessel sustained substantial damage, but pollution was deemed minor. No injuries resulted from this occurrence. The vessel returned to Québec City for major repairs in a local dry-dock taking over a month. As a result, three cruises had to be cancelled.