The firing-rate cost of giant naval guns

Would 20-inch guns make Incomparable exceptionally effective?

Their great size would likely impose a very slow reload and a poor volume of fire.

The discussion of Incomparable’s proposed 20-inch guns focuses on the practical problem of loading them. Even an optimistic reload rate would leave the ship throwing far fewer shells per hour than opponents with smaller, quicker-firing weapons, a reminder that calibre alone is not combat effectiveness.