Aberdeen’s Robbie Renwick and Team GB will take on the might of the United States later tonight.
The team finished their heat in a time of 7min 6.31secs, fastest of all teams in the heats.
Powered by superstar Ryan Lochte, the Americans produced a time of 7min 6.74secs but they may change their lineup for the final.
Renwick struggled during the second leg, leaving Team GB in sixth.
But a colossal second half of the race saw the reigning world champions turn it around to surge into first.
The final will take place at 3.38am tomorrow morning.