However the conference did place restrictions on the number and size of warships of various types that nations could build .
There was discussion of banning submarines altogether , and to outlaw their use ( a course favoured by Britain ) both France and Italy opposed this .
The conference did place restrictions on the number and size of warships of various types that nations could build .
There was discussion of banning submarines altogether , and to outlaw their use ( a course favoured by Britain ) both France and Italy opposed this .