Episode description: Examine the impenetrable submarine pens the Nazis built to protect U-boats from Allied attacks. Such was their size and strength that these pens survive today, a testament to their engineering.
Rating: [TV-PG] (Parental Guidance Suggested)
Series Information: Nazi Mega Weapons
No Upcoming Airdates.
- KET2: Saturday, July 27, 2013 at 4:00 am EDT
- KET2: Thursday, July 25, 2013 at 3:00 am EDT
- KET: Wednesday, July 24, 2013 at 10:00 pm EDT
First aired: Wednesday, July 24, 2013 (excluding any air dates prior to June 1999)