Ukrainian businessman with a submarine plan
7 September 2012 Last updated at 08:10 BST
A Ukrainian businessman has built his own submarine and wants to market it to the public.
Vasyl Chikur, 48, says his machine can travel at a speed of 3.5 knots (6.5km/hour).
He decided to build it when a friend wished for his dreams to come true on his birthday.
Pia Harold reports.