Defiant class starship

Tough it's not very large and it has has some designflaws. it's devasting Phaser cannons and Quantum torpedoes can destroy larger enemy ships with ease.

Shadow class warship

This ship is called "shadow" because it is used by the tal shiar who "operate in the shadows". It has a large armement so it is a opponent to be avoided.

Vor'Cha class Destroyer

The heavely armed Vor'Çha class destroyeris a strong ship of the Klingon fleet. it has a Disrutor beam is one out of very few that can reach that level of power.

Assimilation Cube

The Borg fleet is the Assimilation Cube. It is a large and well armed ship. It's complete armemed's are unknown but it includes: cutting beams and disruptos.