3 Tymor
20 Pennod
Big, Bigger, Biggest - Season 3 Episode 2
Find out what made it possible for the world’s largest icebreaking ship to smash through solid ice a metre and a half thick and pulverise blocks of ice the size of a car with its huge propellers.
- Blwyddyn: 2011
- Gwlad:
- Genre: Documentary
- Stiwdio: National Geographic
- Allweddair:
- Cyfarwyddwr:
- Cast: