From their announcement:
We have released two new ships packs for Master & Commander. The first pack include 24 ships of the Dutch fleet, 3th rates 74 gun, 68 gun, 54 & 50 gun, and frigates.
The other pack are 8 british ships including four two deckers East Indiaman converted ships, and four 50 gun two deckers. This ships were the backbone of the escort fleet in the far East India stations.
Download the new ships in the Master & Commander download section.