Warship
Louchuan (literally Tower Ship) was a type of warship used as a floating fortress in Ancient China. The Louchuan was meant to board troops onto enemy ships. Although they were also armed with trebuchets for ranged combat.
Wugongchuan (literally Centipede Ship) was a Chinese oared vessel of the 16th century inspired by the Portuguese galley.
Fast attack crafts are a small, fast, agile, offensive, often affordable type of warships armed with anti-ship missiles, guns or torpedoes.
Fire ship, a vessel of any sort set on fire and sent into an anchorage or fleet with the intention of causing destruction and chaos. Exploding fire ships are called hellburners.
Frigate, originally a medium-sized sailing ship. Frigates used in modern navies (although they date back to the 17th century) are typically used to protect merchant vessels and other warships.
Armoured frigate are frigates with armour which was added to ships based on existing frigate and ship of the line designs. The additional weight of the armour on these first ironclad warships meant that they could have only one gun deck, and they were technically frigates, even though they were more powerful than existing ships-of-the-line and occupied the same strategic role.
Guided missile frigates are frigates armed with anti-ship missiles.
Galleass, a sailing and rowing warship, equally well suited to sailing and rowing.
Galleon, a 16th-century armed cargo carriers.
Hellenistic galleys, warships propelled by oars with a sail for use in favorable winds used in the Mediterranean Sea.
Bireme, an ancient vessel, propelled by two banks of oars.
Trireme, an ancient warship propelled by three banks of oars.
Quadrireme, an ancient warship invented in Carthage with two levels of oarsmen, and was therefore lower than the quinquereme.
Quinquereme, an ancient warship propelled by three banks of oars. On the upper row, two rowers hold one oar; on the middle row, two rowers; and on the lower row, one man to an oar.
Hexareme, an ancient warship invented in Syracuse. The exact arrangement of the hexareme's oars is unclear. If it evolved naturally from the earlier designs, it would be a trireme with two rowers per oar.
Septireme, an ancient warship invented by the Macedonia, the septireme was derived by adding a standing rower to the lower level of the hexareme.
Octeres, very little is known about the octeres, at least two of their type were in the fleet of Philip V of Macedon at the Battle of Chios.
Enneres, a type of warship whose oaring system may have been a modification of the quadrireme, with two teams of five and four oarsmen.
Deceres, a type of warship which is present alongside "nines" in the fleet of Antigonus I Monophthalmus in 315 BC. It is most likely that the "ten" was derived from adding another oarsman to the "nine".
Tessarakonteres, a very large catamaran galley reportedly built by Ptolemy IV Philopator of Egypt. It had seven naval rams, with one primary, and the deck would have provided a stable platform for catapults that were often mounted on supergalleys. However, the "forty" was likely just a showpiece; Plutarch describes the ship as for exhibition only.
Lembos, light warships most commonly associated with the vessels used by the Illyrian tribes, chiefly for piracy, in the area of Dalmatia. Was soon adopted by Macedonia, Seleucid Empire, Roman Republic and Sparta.
Hemiolia, light and fast warship that appeared in the early 4th century BC. It was particularly favoured by pirates in the eastern Mediterranean, but also used by Alexander the Great as far as the rivers Indus and Jhelum, and by the Romans as a troop transport.  According to one view, it was manned by half the number of oarsmen to make room for the soldiers. According to another, there were one and a half files of oarsmen on each side, with the additional half file placed amidships, where the hull was wide enough to accommodate them.
Trihemiolia, this type was classed with the trireme, and had two and a half files of oarsmen on each side. Judging from the Lindos relief and the famous Nike of Samothrace, both of which are thought to represent trihemioliai, the two upper files would have been accommodated in an oarbox, with the half-file located beneath them in the classic thalamitai position of the trireme.
Liburna, a type of small galley used for raiding and patrols. It was originally used by the Liburnians, a pirate tribe from Dalmatia, and later used by the Roman Navy. It had one bench with 25 oars on each side, while in the late Roman Republic, it was equipped with two banks of oars (a bireme), remaining faster, lighter, and more agile than triremes.
Gunboats are naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets.
River gunboat is a type of gunboat for riverine use.
Flat-iron gunboats were a number of classes of coastal gunboats generally characterized by small size, low freeboard, the absence of masts, and the mounting of a single non-traversing large gun, aimed by pointing the vessel.
Torpedo gunboat were a form of gunboat armed with torpedoes and designed for hunting and destroying smaller torpedo boats.
Motor gunboat is a type of a fast gunboat armed with machine-guns and autocannons.
Grab was a type of ship common on the Malabar Coast in the 18th and 19th centuries. The ghurāb was  originally a galley, but the type evolved into sailing ships armed with cannons.
Gallivat were small, armed type of boats, with sails and oars, armed with swivel guns and used on the Malabar Coast in the 18th and 19th centuries.
Helicopter carrier, an aircraft carrier especially suited to carry helicopters and V/STOL aircraft.
Ironclad, a wooden warship with external iron plating.
Casemate ironclad were a type of ironclad gunboats used in the American Civil War.
Central battery ship in European continental navies, was a development of the (high-freeboard) broadside ironclad of the 1870s
Turret ship was a 19th-century type of warship, the earliest to have their guns mounted in a revolving gun turret, instead of a broadside arrangement.
Floating battery is a kind of armed watercraft, often improvised or experimental, which carries heavy armament but has few other qualities as a warship.
Littoral Combat Ship is a United States Navy classification of warships with the size and role of corvettes.
Longship, a Viking raiding ship.
Maritime Southeast Asian warships:
Djong were sailing warships armed with up to a hundred cannons.
Kakap were small warships used in Maritime Southeast Asia.
Kelulus were Nusantaran warships used as troop transports and raiding vessels.
Lancaran were a type of galley warships armed with Cetbang cannons.
Man-of-war, a British Navy expression for a sailing warship.
Minesweeper are small warships designed to remove or detonate naval mines.
Minehunter are naval vessels that seek, detect, and destroys individual naval mines.
Mine countermeasures vessels are atype of naval ships designed for the location of and destruction of naval mines which combines the role of a minesweeper and minehunter in one hull.
Minelayer are naval vessels that plant naval mines offshore.
Missile boats are small, fast warship armed with anti-ship missiles.
Monitor, a type of small, heavily gunned warships with shallow draft designed for shore bombardment.
River monitor, a type of monitors used in rivers.
Breastwork monitor was a modification of the monitor by Sir Edward Reed of the Royal Navy.
Naval trawlers are vessels built along the lines of fishing trawlers but fitted out for naval purposes
Naval drifters are boats built along the lines of a commercial fishing drifter but fitted out for naval purposes.
Patrol vessels are relatively small naval vessels generally designed for coastal defence, border protection, immigration law-enforcement, search and rescue duties.
Penjajap were galley-like warships used by several Austronesian ethnic groups in Maritime Southeast Asia armed with Lantaka swivel guns.
Q-ship, also known as Q-boats, decoy vessels, special service ships, or mystery ships, were heavily armed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks. This gave Q-ships the chance to open fire and sink them.
Seaplane tenders were a type of ship used to carry seaplanes into the open sea. They are considered by some as the predecessor of the aircraft carrier.
Submarine chaser is a small warship used in anti-submarine warfare.
Ship of the line, a sailing warship capable of standing in the line of battle. A direct predecessor to the later battleship.
Sloop-of-war was a sailing vessel category later revived in WWII as a convoy escort ship.