PIERRE, S.D. (DRG News) – Two Pierre couples plan to be home in a few days after surviving a cruise on extremely rough waters off the coast of Norway last weekend.

Lowell and Karen Somsen and Vern and Jeanne (jean-ee) Olson were aboard the Viking Sky for a 12 day cruise to see the Northern Lights.

Lowell Somsen says the situation became problematic when the engines quit.

Somsen says their evacuation area was flooded for a short time.

Somsen says his wife Karen injured her hip so they were some of the first people evacuated from the ship.

The U.S. Embassy in Oslo said in a statement Sunday more than 600 Americans were on the cruise.

Norwegian officials have opened an investigation into why the ship set sail despite storm warnings.