Water bus manoeuvring at stop-over loses seconds (9)
I believe the answer is:
vaporetto
'water bus' is the definition.
The definition suggests a singular noun which matches the answer.
'manoeuvring at stop-over loses seconds' is the wordplay.
I cannot quite understand how this works, but
'over' could be 're' and 're' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for vaporetto that I've seen before include "passenger boat" , "Venetian canal boat" , "Steamboat in Venice" .)