Vanguard was the last battleship ever launched but the last to be completed was the French 'Jean Bart'. 'Jean Bart' was launched in 1940, but not commissioned until 1949.

Goodnight from Up All Night Nerys.

She was the last battleship ever built for anyone's navy Nerys.
Cheers and sleep tight💤 - don't let the bed bugs bite, 😎

Generally a maximum of 10° Dodgy, max elevation 30°.
so in at the out and out at the in was my first thought as well 👍
With the rifling (almost two full turns) you might get a bit dizzy on the way down though 🤕
Given a 15" x 43.33 calibre gun the slide would be around 54' 2" 😮
😎

Presumably that was when she took King George VI, Queen Elizabeth and Princess Elizabeth on a state visit to South Africa in 1947. Launched in 1944 and not finished until 1946, Vanguard never saw active service, she was the last battleship built for the Royal Navy. I remember seeing her at Coronation Review of the fleet at Spithead in 1953. She spent the rest of her career with the Home Fleet, going into reserve in 1956 and to the breakers in 1960

Maybe, if you slid down on a mat...?

I wonder how far the barrels could depress? To get a decent slide angle you would probably have to enter via the muzzle and exit via the breech.....