Elite Dangerous: Naval Progression. How to
To buy some ships like Imperial Clipper, Courier, Cutter or Federal Dropship, Corvette you will need high rank within Major Faction. Here you can read tips on how to progress through those ranks as fast as possible. It's done in build 1.2 and as we know in 1.3 the mission system will be completely rehauled but the base should remain similar.