TAIPEI (Taiwan News) — The manufacturer of Taiwan’s indigenous Narwhal submarine made a press statement on Thursday to address misinformation related to recent sea trials.

Several media outlets reported that the Narwhal submarine faced technical problems and hazardous situations during recent sea trials, including engine difficulties and reports that the hull was listing to a dangerous degree. In a press release on Saturday, CSBC Corporation Taiwan clarified that these reports were inaccurate.

On Friday, the Narwhal returned to dock after two days of checking equipment in preparation to begin diving tests later this month. Mirror Media reported that two of the submarine’s six diesel engines were not operational during the tests.

Reports suggested that the engines were damaged and inoperable due to the inflow of seawater. CSBS Taiwan said these claims were false and contradicted earlier Mirror Media reports that the submarine was listing over 20 degrees during prior tests.

The latest statement from the shipbuilder follows similar reports in late November that the submarine was operating in unsafe conditions due to the absence of an anchor. CSBC Taiwan explained that the anchor mechanism was undergoing alterations at the time, but denied any safety risk to the crew or vessel.

The company said that crews are diligently conducting Narwhal’s sea trials under safe conditions. The erroneous reports are regrettable, and the submarine will meet the expectations of the public and the demands of national security, per CSBC.