Err... Um... Ship is nice for a first go, but those Tech Descriptions ... needed work. I understand you're a non native english speaker though, so I did it myself (Well, me and the Word Spell Checker
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The GTC Eris is next-generation light cruiser, designed to replace the old Fenris class warships. With their thin of armour and poor weaponry, Fenris cruisers were unable to hold their own against modern Shivan warships. The GTVA lost over 80% of Fenris class cruisers deployed in Second Shivan Invasion. To replace these casualties, GTVA High Council decided to develop a new class of light cruiser. In 2371, first Eris-class warships were put into service. The Eris is very fast and versatile cruiser, armed with the newest weapons in GTVA arsenal. Its complement of Strike Torpedos and multiple heavy Flak cannons can quickly take down any hostile cruiser.
The GTC Eris R-class warship is a drastic refit of the standard Eris cruiser model, designed for deep recon missions beyond enemy borders. Though it has less firepower and lighter amour than the standard Eris Cruise, it compensates for these losses with an even greater top speed than the already fast Eris, and hull plating designed to minimize its profile to enemy sensors.
I think it's pretty faithful to what you were trying to say, just cleaner

. By the way, while I was in the tables I noticed that despite what the TDs say, the table stats for the Eris and the Eris-R are identical. You may want to change that.[/color]