The Andorian Battle Cruiser featured on this site is from the same time period as the Enterprise NX-01 (2150-2156). One of the Andorian Cruisers is named the Kumari.
The captain of the Kumari is named Shran, who shows up and saves Enterprise, specifically Captain Archer, in tight spots many times.
The Andorians are more imperialistic (such comes their name, The Imperial Guard) than Starfleet. This means they have much better weaponry, able to easily destroy ships, and Enterprise is no match for them.
The Kumari is much larger than Enterprise and can travel at a much faster speed. The Andorian Battle Cruiser is my favorite starship because of its sturdiness and style.
