Seadragons

Ryger ir'Wynarn is lord of the Seadragon Principality and nominally the leader of all the Lhazaar Principalities. However, Ryger and his allies (and enemies) know that he could be overthrown by one of the region’s other princes at any time. 

Source: ECG

With a fleet of twenty ships and a host of loyal warriors, the Seadragons are the strongest force in the Lhazaar Principalities. Under the leadership of High Prince Rygar, they have been a stabilizing force in the region. While Rygar has sailed as both privateer and pirate, in recent years he has made the city of Regalport a center for trade in the eastern sea. The high prince fought for recognition at Thronehold, and the Seadragons have been staunch allies of Q'barra -- helping this fledging nation while gaining access to Q'barran dragonshards. 

Source: Dragonshard Part 2

The Seadragon Principality, led by High Prince Ryger ir’Wynarn (LN male human ranger 9), is the nation’s largest—which is to say, Ryger’s personal followers and the twenty ships under their command form the largest fleet in the Lhazaar Sea, allowing them to control the largest swath of territory. Ryger claims descent from the kings of Galifar and dreams of rebuilding a united kingdom. So far, though, he has been unable to unite the squabbling princes to do anything more than present a unified face (Ryger’s own) to the deliberations at Thronehold that ended the Last War and established the Lhazaar Principalities as a sovereign nation. Prince Ryger’s flagship, Dragoneye, makes its home port at Regalport. 

Source: Player's Guide to Eberron 

The largest band currently operating in the Principalities is the Seadragons, led by High Prince Ryger ir’Wynarn (LN male human, ranger 9). From aboard his flagship, the powerful and fast Dragoneye, Ryger commands a fleet of twenty ships that can be outfitted as easily for war as for carrying cargo. His port of call, the large town of Regalport, boasts some of the best shops and inns east of the Mror Holds and can easily be called the jewel of the Lhazaar Sea. The prince has ruled the Seadragon Principality for fifteen years, and throughout that time he has claimed to have the blood of the Galifar kings running through his veins. Whether this claim is true or not, Ryger has demonstrated remarkable charisma, a gift for leadership, and a head for strategy that makes him one of the deadliest captains plying the waters off the eastern shores. In addition to overcoming the challenges that flare up between the Principalities, Ryger’s fleet proved itself in battle repeatedly during the final decade of the Last War. Pirate, privateer, merchant—Ryger has worn all of these hats and more since wresting the prince’s crown from the head of Horget Black, the previous high prince of the Lhazaar Sea.

As high prince, Ryger is seen as a leader among equals, and most of the sea barons and pirate lords bow to his wisdom and counsel (though not yet to his rule). Those who refuse to pay heed to Ryger do so quietly, so as not to attract the attention of his warships and loyal warriors. It was Ryger who gathered a council of captains and went to Thronehold to represent the Principalities in the talks that ended the war. Now, working mainly as a merchant fleet for House Orien, the Seadragons hope to gain an even greater advantage in peace than in war. High Prince Ryger wants to unite the Principalities under one banner—the banner of the striking seadragon on a field of blue-green waves, the banner of Prince Ryger ir’Wynarn.

Source: ECS

The Seadragons are the best equipped and most formidable navy in the region. Throughout the Last War the Seadragons were the most successful principality, with a profitable merchant fleet backed by powerful privateers. The Seadragons claim every island in the chain from Orgalos down to Thrug, confidently patrolling the temperate waters from Dreadhold on the northern end to Traglorn Isle in the south. 

The Seadragons have cultivated a special relationship with House Orien, acting as a merchant fleet alternative to House Lyrandar shipping. Seadragon merchant ships frequently have Orien couriers amongst their passengers, carrying mail throughout the Principalities. Providing a basic governmental function like the mail has reinforced the Seadragon’s claims of authority.

The size and success of the Seadragons has formalized their internal hierarchy. Captains usually have tactical autonomy to conduct missions as they see best but defer to Ryger for strategic decisions such as the choice between anti-piracy patrols or engaging in trade. One of the Seadragon’s greatest strengths has been investments in long-range communication magic, so each captain can stay in contact with Ryger on a daily basis. This dynamism has helped the fleet balance priorities between merchant, peacekeeper, and during the war privateer.