A fierce opponent , Tzachas constructed Building the first Turkish navy and captured Conquering a few Aegean islands , supplemented Supply by the conquest Conquering of Smyrna and Abydos .

Alexios was also able to rapidly quell the threat Warning of Abu ' l Qasim , the Seljuk governor of Nicaea , who attempted Hold to create Creating a fleet of his own at Abydos in ca .