- Naval warfare : The military history of the organized navies of the world from 300 BCE to the present.
- Ship : Vessel larger than a boat for transporting people, goods, or defence by sea, and capable of crossing open waters.
- Anti-air warfare : In the context of naval warfare, the mission of defending against aircraft and missiles, from platforms under naval command and control, possibly in coordination with other services and possibly defending land as well as sea areas.
- Anti-submarine warfare : (ASW) In the context of naval warfare, the mission of attacking underwater vessels, from platforms under naval command and control.
- Anti-surface warfare : (ASuW) In the context of naval warfare, the mission of attacking surface vessels, from small boats to supertankers and aircraft carriers, from platforms under naval command and control
- Land attack : A range of technologies and techniques used to attack targets on land from the sea; the targets are usually assumed to be well inland, and the weapons to be non-nuclear
- Mine warfare : An area of military technology and doctrine, which deals with the development, use of, defense against, and removal of land mines, improvised explosive devices, and sea mines. These devices are characterized by being distributed prior to the presence of an adversary; the mines trigger either by sensing the enemy, or by command from friendly forces.
- Naval gunfire support : naval gun, unguided rocket, and guided missile fire from ships, in direct support of ground forces; does not include close air support even if the aircraft fly from ships
- Strategic strike : Use of kinetic (i.e., physically destructive) and nonkinetic (e.g., information operations deep into enemy territory, affecting military forces in the homeland, or population, industry, and infrastructure.
- Aircraft carrier : A warship designed to launch and recover combat aircraft and aircraft that support military operations
- Cruiser : While definitions vary with time and doctrine, a large warship capable of acting independently, as a flagship, or a major escort; capabilities include anti-air warfare, anti-surface warfare, anti-submarine warfare, land attack, and possibly ballistic missile defense
- Destroyer : While the definition has evolved constantly, it is a multipurpose surface warship, generally less powerful than a cruiser, with capabilities against ship, aircraft, submarine, land, and sometimes ballistic missile targets
- Fast attack craft : Small naval craft, used in coastal waters, which rely on speed and maneuverability to survive to deliver heavy weapons (e.g., torpedoes, anti-shipping missiles) against warships, or to make gunfire attacks on merchant ships and landing craft
- Ocean escort : A warship with weapons and sensors to defend itself and ships near it, sturdy enough to operate in ocean conditions, but with only enough speed to escort merchant and military support ships, and usually not built to full warship standards of battle damage survivability
- Submarine : A ship or boat that can travel underwater
- Littoral Combat Ship : Lighter than a U.S. destroyer or frigate, (but heavier than a corvette or fast attack craft) relatively low-cost U.S. Navy warship type, capable of ocean crossings but optimized for coastal operations including mine warfare (MIW), anti-submarine warfare (ASW) and anti-surface warfare (ASW).
- Battlecruiser : A large warship with guns comparable to those of a battleship, equal or greater speed, but less armor; "can catch what it can kill and run away from what can kill it"; had disastrous experiences when fighting true battleships
- Battleship : A heavily-armored, warship optimized for fighting other warships using large-caliber guns; certain armor requirements differentiated from cruisers; obsolete by end of World War II.
- Monitor (warship) : An armored warship, possibly limited to coastal waters, with large-caliber guns in one or more turrets
- Ship of the line : A major sailing warship, intended to fight in fleet actions (i.e., in line of battle)
- Amphibious warfare : The set of techniques, equipment, specialized units, and methods of training needed to move troops across water, and deliver them to land, ready for immediate combat.
- Freedom of navigation : Add brief definition or description
- Power projection : The capability to deploy military forces, even if limited to air and special operations, on short notice over intercontinental ranges
- Ship ceremonies : Historical occasions in the life of a ship, usually beginning with keel-laying, and proceeding to launching, and, for naval vessels and vessels in a merchant service, ship commissioning; warships tend to have additional ceremonies such as change of command and decommissioning
- Underway replenishment : A series of techniques, introduced in the Second World War, for keeping warships in constant operation by resupplying them at sea; challenging both in the pure seamanship of the transfer, and the logistical system that brings supplies to the ships
- Connected replenishment : A subset of underway replenishment, in which the supply ship and the warship being resupplied stay in a close formation, making transfers with hoses for fuel, and ropes and cables lifting equipment and baskets of supplies. Requires an extremely high level of seamanship
- Vertical replenishment : A subset of underway replenishment, in which the supply ship and the warship being resupplied do not physically connect, but use helicopters to transfer the supples. Faster and requiring less shiphandling skill than connected replenishment, but cannot transfer as large a volume