Thunderbirds Season 1 Episode 19
When the Ocean Pioneer tanker inexplicably explodes, Brains investigates the cause. With some help from Lady Penelope, he discovers it to be a chemical reaction between the cargo of liquid Alsterene and OD60, which is found in the sea. International Rescue set out to save the crew of the ill-fated Ocean Pioneer II.
Serie: Thunderbirds
Episode Title: Danger at Ocean Deep
Air Date: 1966-02-03