Having looked closely at the film and on the web, I believe the ship to be the SS Oronsay. If you do a Google search for this ship, you can see in the images the correct color an configuration.
No idea
The duration of Carry On Cruising is 1.48 hours.
Carry On Cruising was created in 1962-04.
Carry on Cruising - 1962 is rated/received certificates of: Australia:G Finland:S Sweden:Btl UK:U
starboard
NAVIGATOR
Most cruise liners have a cruising speed that ranges between 22 and 31 knots. A cruising speed of 26 knots is about 30 miles per hour.
The film was set and filmed in Weston-super-Mare
The Carry On films are a series of British Comedy movies. The first one to be shot in color was Carry On Cruising.
20 miles
USS Enterprise
Yes. It does not matter whether one is planning to get off the ship or not. A passport is required.
About 20-25 knots.