cruiser
They would have been called a "ship of the line".
A frigate can be any of several classes of "warship." Modern frigates are similar in size to destroyers, i.e. smaller than cruisers. US frigates are comparable to the Destroyer Escorts of World War II, which were more heavily armed ships.
Ship of the line, Typically the largest warship of the civil war era.. with at least 3 gun decks. Ironclad, early steam powered warship with defensive armor plating. Frigate, most common size of warship in the civil war. Privateer, privately owned warship, acting under letter of marque. Gunship, any vessel armed with cannon.
Warship - journal - was created in 1977.
Warship International was created in 1964.
There are a lot of different jobs on modern warships, from chefs, to weapon systems operators to pilot. I recommend looking at royalnavy.mod.uk/careers for a better insight into various jobs
A corvette is a small, maneuverable, lightly armed warship.
Possibly a Russian warship built in the Kiev Shipyards.
A battle-cruiser is a form of warship equal or larger in size to a battleship, and with greater speed, but with less armour and fewer guns.
An average Greek warship would weigh around 50-100 tons. These warships were known as triremes and were designed to be fast and maneuverable for naval battles in ancient Greece.
Warship Support Agency was created in 2001.