Note 132 — Chapter IX · STEAM NAVIGATION. THE ‘GREAT BRITAIN’ STEAM-SHIP. A.D. 1838—1847. ÆTATIS 33—42.
Reading edition
It maybe convenient here to state that the dock in which the ‘Great Britain’ was built led into the Floating Harbour, which is a portion of the channel of the river Avon closed in. The Floating Harbour communicates through the Cumberland Basin with the river.