Actuariolum binding (200 BC). Taken from a bas-relief of the Vatican (late empire).

Actuariolum was a pure passengers boat because it was not fit for war or trade. It was a small unbridged ship, which was specified to have never had more than eighteen rowers as opposed to the "great" Actuaria. Actuariolum was the diminutive of Actuaria. It was also not veiled in principle, although weather permitting, it erects a mast wearing a small sail easy to stir. One of them is mentioned for having transported Cicero, and possessed two rows of five rowers. Most of these boats were therefore simple boats, embarked if necessary, and also practiced river navigation and on lakes.