Could Green Mace have become a naval anti-aircraft gun?

Would pursuing the Green Mace anti-aircraft gun for naval service have been worthwhile in the missile era?

It was worth investigating and might have produced a useful weapon if engineers could achieve a rapid cyclic rate and reliable automatic loading.

Adapting a Green Mace-style anti-aircraft gun for naval service is treated as worth investigating, with no assurance of success. The condition is that it could achieve a high cyclic rate with automatic loading. The brief reply does not establish a tested naval installation or compare it systematically with missiles.