Coastal battleship guns versus mobile missiles

Would any nation benefit from battleship-calibre coastal guns covering choke points such as the Singapore Straits?

Singapore and some other choke points could benefit, but a missile system would be more mobile and could achieve the same purpose.

Singapore is offered as a possible location for a large coastal gun because it overlooks a narrow sea passage. The answer allows that other countries could find similar uses. A missile system, however, would be more mobile and could perform the same task, reducing the attraction of a fixed heavy-gun installation.