Bristol, 1618. Kit Faulkner is a young vagrant orphan, taking life as he finds it in the rough world of the docks. But after an encounter with two gentlemen, his fortunes are changed forever.Kit is taken aboard the Swallow, a large merchant ship partly owned by the two men, Captain Henry Mainwaring and Captain Gideon Strange, and they decide to train the boy for a life on the sea.

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.

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.

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.

It was an age of empire, an age of contrast, and an age of dramatic change - and one which would determine the destinies of nations as well as of men. Captain Philip Blackwood of the Royal Marines rejoins his ship, HMS Audacious, in August of 1850, anxious to get back into action. "Per Mare - Per Terram" is the marines' motto. In the torturous heat of Africa, where they are sent to stamp out the remaining strongholds of slavery, and later, in the bitter war of the Crimea, Philip Blackwood and his men learn to obey it without question.

It was in 1943. On the Black Sea, the Russians were fighting a desperate battle to regain control. But the Russians’ one real weakness was on the water: whatever they did, the Germans did it better, and the daring hit-and-run tactics of the E-boats plagued them. At last the British agreed to send them a small flotilla of motor torpedo boats under the command of John Devane. Devane had been in the Navy since the outbreak of war.

In August 1939, Duncan Morant, the only son and heir of the second Lord Eversham, is enjoying life as a man-about-town, skippering his racing schooner Kristin. But Duncan is also a sub-lieutenant in the Royal Naval Volunteer Reserve, and as the war clouds gather, he is called up.

London: 1793. Young firebrand John Pearce, on the run from the authorities, is illegally press-ganged from the Pelican tavern into brutal life aboard HMS Brilliant, a frigate on her way to war. In the first few days, Pearce discovers the Navy is a world in which he can prosper. And he is not alone; he is drawn to a group of men who eventually form an exclusive gun crew, the Pelicans, with Pearce their elected leader.

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.

Shaking off this label, a shy and lonely 17-year-old, Horatio Hornblower, embarks on a memorable career in Nelson's navy on HMS Justinian. In action, adventure, and battle he is forged into one of the most formidable junior officers in the service.

In the spring of 1915, a young Austro-Czech naval lieutenant Ottokar Prohaska finds himself posted to the minuscule Imperial and Royal Austro-Hungarian Submarine Service in the Adriatic port of Pola. In some trepidation at first, because he has no experience whatever of submarines, his fears are soon set at rest when he discovers that nobody else has either: least of all his superiors.

October 1772, Portsmouth. Sixteen-year-old Richard Bolitho waits to join the Gorgon, ordered to sail to the west coast of Africa and to destroy those who challenge the King's Navy. For Bolitho, and for many of the crew, it is a severe and testing initiation into the game of seamanship.

In this seminal story of naval life during the Napoleonic wars, Frederick Marryat's young hero embarks upon a life at sea and finds it to be a rough school indeed. Simple's trials and triumphs, with his faithful mentor, Terence O'Brien, at his side, mirror Marryat's personal experiences. Among the exciting events depicted are the hand-to-hand combat of "cutting-out" missions, the devastating hurricane off St. Pierre, and a mutiny aboard the Rattlesnake.

At the time of the French Revolution, one of Britain's most skillful naval officers, Charles Saunders Hayden, is a young lieutenant, the son of an English father and a French mother. His abilities and his loyalty to the king of England are beyond dispute, yet his career seems doomed by his "mixed" heritage and lack of political connections. Consequently, Hayden is assigned to an aging frigate, the Themis, under the command of Captain Josiah Hart, a man known as "Faint Hart" throughout the service.

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.