The generic Roman term for an oar-driven galley warship was "long ship" (Latin:
navis longa, Greek:
naus makra), as opposed to the sail-driven
navis oneraria (from
onus, oneris: burden), a merchant vessel, or the minor craft (
navigia minora) like the
scapha.
Merchant vessels The city of Rome was heavily reliant on the delivery by ship of the large amounts of grain it consumed. Rome imported about 150,000 tons of Egyptian grain each year over the first three centuries AD. Not only were insufficient amounts available in the agricultural areas around the city, but it was cheaper to transport it substantial distances by sea than short distances by land. It has been estimated that it cost less for a sailing ship of the Roman Empire to carry grain the length of the Mediterranean than to move the same amount by road. Merchant ships, such as
naves onerariae, had always been pressed into service for military purposes such as for transporting troops to North Africa in the Second Punic war. In 204 BCE,
Scipio Africanus ordered the impressment of merchantmen for the
invasion of Africa, four hundred ships according to Livy.(29.26.3)
Actuaria mosaic. The figure towards the bow of the ship is beating the time for the rowers with a mallet; from photo by Paul Gauckler, 1911. An (short form of , "ship that moves"; plural ) was a type of merchant galley used primarily for trade and transport throughout the Roman Empire. The was equipped with sails as well as oars. It was more expensive to operate than merchant
sailing ships, and was used where speed and reliability were a priority. It could carry both passengers and wares such as honey, cheese, meat, and even live animals intended for
gladiator combat. Variants of the were used as troop transports, for example in the
invasion of Britain. In 47 BCE,
Publius Vatinius equipped at
Brindisi with temporary
rams to support
Julius Caesar's forces in
Illyricum, on the other side of the Adriatic, though these were only suitable to combat smaller enemy vessels. were also employed along the major rivers by
Germanicus in his campaigns against the
Germanic tribes around 16 AD.
Navis oneraria Roman
naves onerariae could have up to three square-rigged masts. They depended on the wind and could not leave port on oar power alone, where the more maneuverable galleys could. If winds were not favorable,
warping or towing were alternatives. There is some evidence from Claudian in
De Bello Gildonico that
naves onerariae were in use until late antiquity. Images of two
naves onerariae were pictured in an
ancient mosaic floor discovered in Lod, Israel in 1996. Despite damage to the floor, students of maritime history have been able to glean a great deal of information from the images. The ships are of the
navis oneraria type, a Roman merchant ship typically displacing 80–150 tons, used to carry such commodities as
garum and grain from Egypt to Rome.
Transportation Corbita Corbitae were grain ships going back to the Greeks in the 5th c BCE, with loads of around 150 tons. In the first century BCE, they could haul 1300 tons of grain and liquids; the latter in large amphorae. The hulls of the Roman
corbitae were little changed from the Greek design, and were large, with high sides. Steering was provided via twin steering oars which were very adequate to the task, and not inferior to medieval rudders from later centuries. The oars could be boxed in to the hull with reinforced planking for protection.
Obelisk ship Warships Bireme bireme depicted in a relief from the Temple of
Fortuna Primigenia in
Praeneste (
Palastrina) Biremes were typically about 80 feet (24 m) long with a maximum beam width of around 10 feet (3 m).
Liburna Originally, the was similar to the
ancient Greek penteconter. 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. The liburna design was adopted by the Romans and became a key part of the
Roman navy in the second half of the 1st century BCE.
Liburnae played a key role in the
Battle of Actium in
Greece (31 BCE), which saw the establishment of
Augustus as the undisputed ruler of the Roman world. The architecture of the differed from that of the battle triremes,
quadriremes and
quinqueremes. It was long and wide with a draft. Two rows of oarsmen pulled 18 oars per side. The ship could make up to fourteen knots under sail and more than seven knots under oar power. After adopting the , the Romans made adaptations to add rams and protection from missiles, in order to improve the ships' use as navy ships. The benefits gained more than made up for the slight loss of speed. The Romans made use of the particularly within the provinces of the empire, where the ships formed the majority of the fleet, while it was included in smaller numbers in fleets in
Ravenna and
Misenum, where a large number of the Illyrians were serving.
Navis lusoria , Mainz A is a type of a small military vessel of the late Roman Empire that served as a
troop transport. It was powered by about thirty soldier-oarsmen and an auxiliary sail. Nimble, graceful, and of shallow draft, such a vessel was used on northern rivers close to the
Limes Germanicus, the Germanic borderlands, and thus saw service on the
Rhine and the
Danube. Roman historian
Ammianus Marcellinus mentioned the
navis lusoria in his writings, but not much was learned about them until the discovery of such boats at Mainz, Germany in 1981–82. Olaf Höckmann claimed that the Mainz boats are probably , and have some architectural similarity with earlier liburnae. The type A Mainz ships 1 and 7 appear to be identical in form to the ships Ammianus Marcellinus described in his reports on 4th century Rhine battle vessels, and which he always referred to as . Höckmann finds that ships 1, 4, 7, and 9 are likely lusoriae.
Quinqueremes Quinqueremes, meaning "five-oared" and indicating that there were five oarsmen per bank of oars, were the first warships the Romans built and provided the workhorse of the Roman fleet throughout the
Punic Wars. So ubiquitous was this type of ship that the historian
Polybius uses it as a shorthand for "warship" in general.
Hexaremes (six oarsmen per bank),
quadriremes (four oarsmen per bank) and triremes (three oarsmen per bank) are occasionally mentioned in the sources. A quinquereme carried a crew of 300: 280 oarsmen and 20 deck crew and officers. It would also normally carry a complement of 40 marinesusually soldiers assigned to the shipif battle was thought to be imminent this would be increased to as many as 120. , showing the positions of the rowers in one file The quinquereme was a
galley, long, wide at water level, with its deck standing above the sea, and displacing around 100
tonnes (110
short tons; 100
long tons). Galley expert
John Coates suggested that they could maintain for extended periods. The modern replica galley
Olympias has achieved speeds of and cruised at for hours on end. Average speeds of were recorded on contemporary voyages of up to a week. The generally accepted theory regarding the arrangement of oarsmen in quinqueremes is that there would be sets – or files – of three oars, one above the other, with two oarsmen on each of the two uppermost oars and one on the lower, for a total of five oarsmen per file. This would be repeated down the side of a galley for a total of 28 files on each side; thus 28 × 3 × 2 or 168 oars in total. Getting the oarsmen to row as a unit, let alone to execute more complex battle maneuvers, required long and arduous training. At least half of the oarsmen would need to have had some experience if the ship was to be handled effectively. As a result, the Romans were initially at a disadvantage against the more experienced Carthaginians. To counter this, the Romans introduced the
corvus, a bridge wide and long, with a heavy spike on the underside of the free end, which was designed to pierce and anchor into an enemy ship's deck. This allowed Roman legionaries acting as marines to
board enemy ships and capture them, rather than employing the previously
traditional tactic of
ramming. All warships were equipped with rams. See details at .
Trireme A trireme was a type of
galley with three tiers of oars that was used by the ancient maritime civilizations of the
Mediterranean Sea, especially the
Phoenicians,
ancient Greeks and
Romans.
Others •
camarae: a flat-hulled, double ended, low freeboard ship from the eastern Black Sea (1st century CE) with 25 to 30 men; could be rowed in either direction •
cybaea – used in Sicily first century BC •
lembus – a small, fast, and maneuverable, light
Illyrian warship, capable of carrying 50 men in addition to the rowers. It was the galley used by
Illyrian pirates •
moneres – single-row oared vessels •
phaseli – sailing passenger ferries first centuries BCE and CE •
picatos - Lightly-built swift
pinnaces with a square sail and around twenty rowers per side used in Britannia. •
vectoria - passenger ferry second century CE • Roman penteconter – the name of the Greek
penteconter was not romanized for the Roman version of this ship. == Naval tactics ==