From the Freeman’s Journal of 5 December 1833:

The Broadstone, from The Tourist’s Illustrated Hand-Book for Ireland 3rd ed David Bryce, London 1854
UNPRECEDENTED SPEED ATTAINED IN TRAVELLING UPON THE ROYAL CANAL
The Court of Directors of the Royal Canal hereby give Notice, that the present Day-Boat will cease running on Friday, the 6th, and that an Iron-Boat, capable of conveying Seventy Passengers, will leave the Broadstone harbour, at Nine o’Clock, on the Morning of Saturday, the 7th inst, for Mullingar, where it will arrive at Five o’Clock in the Evening; and Notice is further given, that at Nine o’Clock upon each Tuesday, Thursday, and Saturday, a Boat will leave Dublin for Mullingar, and return from thence at the same hour upon Monday, Wednesday, and Friday. By the foregoing arrangement a saving of three hours and a half will be effected. The Night-Boat will, for the present, continue to leave Dublin for Longford, each day, at Two o’Clock, and a Boat will depart from thence, for Dublin, each Morning, at Eleven o’Clock.
By Order,
SAMUEL DRAPER, Secretary.
Royal Canal-house, 2d Dec., 1833.