Join Submariner Sinclair in another nautical adventure! Perfect for fans of Clive Cussler, Douglas Reeman and Duncan Harding.

Sinclair and the crew of H.M. Nuclear Submarine Rugged are in a race against time to prevent a world catastrophe!

A Nazi war criminal believed to have been executed years ago is seen very much alive in Hamburg.

When Lieutenant Hank Jefferson, U.S. Navy goes missing, the Admiralty, already troubled by disturbing rumours of Nazi resurgence, know just the man to find him.

Lieutenant Peter Sinclair, R.N., in command of H.M. Nuclear Submarine Rugged on N.A.T.O. exercises in the Baltic, is ordered to investigate.

When Rugged follows a mysterious German whaling ship into dangerous and unfamiliar waters, they make a shocking discovery.

For Sinclair and his crew the race is on to save Hank’s life.

But can they also avert a world catastrophe?

SUB-ZERO is the fifth book in the Submariner Sinclair series: rip-roaring authentic adventures following a British submarine crew.

’John Wingate has certainly found a winner in Peter Sinclair’ – The Navy

THE SUBMARINER SINCLAIR SERIES:
BOOK ONE: Submariner Sinclair
BOOK TWO: Jimmy-the-One
BOOK THREE: Sinclair in Command
BOOK FOUR: Nuclear Captain
BOOK FIVE: Sub-Zero
BOOK SIX: Full Fathom Five