I made a comment in a conversation like, "It's not a destroyer without a nuke", and a friend asked me for clarification. So I wrote this up for him, but I thought I would also share it with the Artemis community:
These are ship types most commonly used in science fiction and modern naval terms. Most science fiction stories and modern navies use these terms and definitions. Since they do differ, I'm going to present both wikipedia's definition based on modern navies and my own based on science fiction books and shows.
What's weird is that ancient sailing ships used the same terms, with different definitions. So fantasy-genre books may use the same ship terms but refer to different ships entirely.
These are for modern and science fiction ships:
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Wikipedia definitions:
Battlecruiser - a lightly armoured battleship.
Corvette - a small, maneuverable, lightly armed warship, originally smaller than a frigate.
Battleship - a large, heavily armoured and heavily gunned warship.
Cruiser - a warship that is larger than a destroyer, but smaller than a battleship.
Destroyer - a warship mainly used for anti-submarine warfare and escort duties.
Frigate - a term used for warships of many sizes and roles over the past few centuries.
Torpedo boat - a small, fast surface vessel designed for launching torpedoes.
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My own definitions for science-fiction purposes:
Interceptor: a light, fast corvette designed for stealth and maneuverability for quick raids. All Interceptors lack jump capability and have to be carried by larger ships. Some heavy interceptors may be capable of one jump. (A cross between a submarine and fighter plane.)
Corvette: The smallest warship, specifically designed to deal with interceptors. Also, suitable for transporting non-vital cargo or performing escort duties for frigates and destroyers. Most corvettes lack range and usually have to resupply after a single jump. Some are capable of two jumps.
Frigate: a small warship, but larger and slower than a corvette with a longer Jump range. Equivalent firepower to two or more corvettes, and are usually capable of 2 or 3 jumps before having to resupply. Often equipped for taking on Interceptors, but not usually specialized in the role. The largest frigates can carry about half a dozen Interceptors.
Destroyer: a type of frigate specifically designed for taking out cruisers and larger ships. Often equipped with a powerful main gun or special missile weapon uniquely qualified for punching through heavily armored/shielded ships. Will often require escorts to defend against smaller targets. Equivalent range to a frigate or heavy corvette - 2 or 3 jumps.
Cruiser: Smaller than a battleship, with equivalent weapons and armor of a heavy frigate, but much faster and capable of carrying smaller ships or dozens of interceptors. Extremely long Jump range. They can make about a dozen jumps before having to resupply.
Battlecruiser: A cruiser with less speed but heavier weaponry, and still the equivalent armor of a heavy frigate. A good "first strike" ambusher, but not suited to other battle roles. Extremely long range. They can make about ten jumps before having to resupply.
Heavy Cruiser: A heavily armored version of the cruiser, sacrificing some speed for armor. Extremely long range. They can make about a ten jumps before having to resupply. Much more common than BattleCruisers, but still mostly suited for anti-frigate and anti-cruiser roles.
Carrier - Large and slow, with moderate armor but almost no weapons, these behemoths use most of their space for docking, crew, and repair facilities. They have the Jump range of a cruiser, being able to make about 10 jumps before having to resupply. Unlike their smaller cousins, they can carry a great many Interceptors and Frigates into battle, or instead carry a couple of Battleships.
Battleship - a slow, heavily armored warship with tons of weaponry. Like the cruiser, it can carry smaller frigates or dozens of Interceptors. Moderately long range, but much less than a cruiser. A battleship is capable of about 5 or 6 jumps before having to resupply.
Daredevil Cosmic Cowboys, TNS Hyperion, Weapons Officer
1st Fleet of Southern California Sector.