After a century of war, revolutions, and imperial conquests, 1790s Europe is still embroiled in a battle for control of the sea and colonies. Tall ships navigate familiar and foreign waters, and ambitious young men without rank or status seek their futures in naval commands. First Lieutenant Alexander Clay of the frigate Agrius is self-made, clever, and ready for the new age. But the old world, dominated by patronage, retains a tight hold on advancement.

Midshipman Johnnie Wharton has no idea when he joins HMS St George as a 12-year-old that he is soon to take part in some of the greatest sea battles of Nelsons Royal Navy. Life aboard his next ship HMS Gibraltar is tough for the youngster and he and the other officers face disgrace as his Captain blunders badly at the Battle of the Glorious First of June.

Captain Carlisle hails from Virginia, a loyal colony of the British Crown. As the clouds of war gather, Carlisle's small frigate is ordered to Toulon on a reconnaissance mission. If battling the winter weather in the Gulf of Lions is not a sufficient challenge, Carlisle must also juggle the delicate diplomatic issues in this period of pre-war tension while contending with an increasingly belligerent French frigate. But Carlisle has additional problems unique to his colonial origins.

A stroke of good fortune sees 12-year-old Martin escape his hard life and be taken on as a ship's boy and under steward to the captain in the Royal Navy frigate the Falcon. What follows is a chronicle of his talent for getting into and out of trouble at Gibraltar, the siege of Toulon, and against Barbary pirates.

The year 1792. With French revolutionary agents traveling freely but secretly between Ireland and England and war with France inevitable, the English government of Mr. Pitt is desperately anxious to uncover any plots between Irish rebels and the French. Lieutenant James Merriman with his ship, the sloop Aphrodite, is ordered to the Irish Sea to assist the principal treasury agent Mr. Grahame in this work. Merriman is plunged headlong into the world of espionage, and when Grahame is seriously wounded, it falls to Merriman to carry on the investigation.

It's 1941, and the fate of the world hangs in the balance. Across the stormy North Atlantic rages a battle between wolfpacks of U-boats and escort ships fighting to protect the Allies’ vital convoys. Meanwhile, teams of codebreakers at Bletchley Park struggle to penetrate the German Navy’s Top-Secret Dolphin code to unlock the flow of vital intelligence that will swing the battle in the Allies' favor.

1793 and Europe is ablaze with war. Thomas Paine Kydd, a young wig-maker from Guildford, is seized by the press gang to be a part of the crew of the 98-gun line-of-battle ship Duke William. The ship sails immediately and Kydd has to learn the harsh realities of shipboard life fast. Despite all that he goes through in danger of tempest and battle he comes to admire the skills and courage of the seamen - taking up the challenge himself to become a true sailor.

In the unforgiving docklands of east London, young orphan William must do all he can to survive. Like the other ‘wharf rats', his life of petty crime is not a choice; it's a necessity. But William's misdeeds won't remain hidden for long. When the boy unknowingly steals from a murderous pirate captain, escape is his only option. He is forced to stow away and begin a life that will take him to the far side of the world; a life as a soldier of the East India Company.

It's 1803. The Napoleonic Wars are raging, Britain is on her heels, and His Majesty's Secret Service has just lost its best agent, Thomas Grey. Deeply depressed by his wife's untimely death, Grey resigns from the service and accepts an offer to join a lumber firm in Boston. But when a sea battle with a privateer forces the ship carrying him west to make port in neutral Portugal, Grey is approached with a counteroffer: Become a wealthy man by selling out Britain's spy network to France.

After gaining valuable experience as an aide to Governor Lord Horatio Hornblower, William Brewer is rewarded with a posting as first lieutenant on the frigate HMS Defiant, bound for American waters. Early in their travels, it seems as though Brewer’s greatest challenge will be evading the wrath of a tyrannical captain who has taken an active dislike to him. But when a hurricane sweeps away the captain, the young lieutenant is forced to assume command of the damaged ship, and a crew suffering from low morale.