Ok here are some of my designs that I created in my existing Suicidal game.
Tritium Class Interceptor

The first armed Terran Alliance (TA) spacecraft, this inexpensive multi-purpose tiny-hulled spacecraft eventually found a multitude of uses. During peacetime, the Tritium is used to patrol the neutral zone, explore unknown sectors of space, and run escort missions. During wartime though, the Tritium really shined. With only limited armament, it is used to as the TA's eyes and ears to watch for enemy movements. These interceptors often go on search and destroy missions, to take out enemy freighters, transports, and lightly armed spacecraft. They are often overlooked, but historians now view the Tritium and their pilots as being instrumental in the war effort, by disrupting enemy trade routes, preventing enemy reconnaissance, and protecting allied territory from troop invasions.
Normandy Class Defender

When the Drengin Empire launched an assault on the Terran Alliance, shortly after first contact, it was realized that the Tritium Class vessels were simply not powerful enough. The Normandy Class were rushed into service shortly thereafter, and have since proved to be the turning point of the war. This highly maneuverability small-hulled spacecraft employs only limited offensive firepower, but has a very high amount of defensive protection. Vessels are refitted with the appropriate defense to protect against the weapon an enemy is carrying, which allows the defenders to best their adversaries with the minimal amount of weaponary they carry. The most common mission of the Normandy is planetary and starbase defense.
Bradley Class Space Tank

The Bradley Class is also a small-hulled vessel, similar to the Normandy Class, but is designed with the most advanced offensive equipment available to give it the advantage over enemies during battle. As the Drengin were regrouping after their initial invasion attempts failed due to the Normandy, the Bradley Class Tanks were just coming out of production. Their design mixes the best of a Corvette and a Starfighter, allowing turrents on the top and bottom of the vessel, and with 4 powerful forward weapon slots. Although the Bradley is not a large spacecraft, it is often used to escort transports, assist in planetary invasions, and will assault enemy fleets anywhere it finds them.
Marshall Class Destroyer

As time passed, the Terran-Drengin conflict came to a stalemate. As Terran continued it's space explorations, they met the Alterians, a species very similar to humans. After an exchange of technologies, Terran developed it's first medium-hulled spacecraft designed solely for battle. The Marshall Class Destroyer emerged. This advanced fighting ship would be the prime defender of Terran Alliance territory during war. As the Drengin war continued, the Marshall proved to be the TA's staunchest line of defense, and provided a crucial tactical edge. They employ superior firepower as well as good defenses. The seperated 1st generation engines gave increased performance, and the dedicated frontal command section gave much quicker response times.
Patton Class Battle Cruiser

One of the darkest times in the galactic quadrant, known as Galactic War 1 (GW1), brought the Patton into service. The Drengin brought their ally, the Korath, into the war. The Alterians assisted Terran against the destruction the evil civ's were bringing about. Many other alien spieces were also involved on both sides. The Patton was the first large-hulled ship Terran produced. Similar to the Marshall in many respects, this was the juggernaut that spearheaded assaults, as well as helping to defend allied worlds and territories. The Patton initially was unwieldy and had a variety of problems when it entered service, but eventually came to be one of the finest Terran ships ever developed.
And the final ship of the Terran Alliance, added 1-27-09.
Gemini Class 'Wedge' Battleship

This huge-hulled Battleship was fondly referred to as the 'Wedge' by the Terrans, given it's ability to break through even the toughest fortifications. Although Galactic War 1 lasted many years, only a few of these Battleships were able to be constructed, due to their immense size and initial logistical issues. It was at the "Battle of Qima Omicron", near Starbase 39, where the final and decisive engagement began. Alterian intelligence intercepted plans for a massive attack in this quadrant by a large portion of the Korath and Drengin military. When the assault began, the Gemini Battleships along with fleets of Terran ships, performed a near-warp maneuver which surprised and flanked the enemy fleet. Most of the enemey fleet was destroyed with few allied losses. The end of Galactic War 1 was finally at hand.