Could Iron Duke have returned to wartime service?

What military use could Iron Duke have had if she had not been bombed at Scapa Flow?

A return was theoretically possible but uneconomic; rebuilding Tiger or constructing a purpose-built carrier would have offered more useful wartime capability.

Iron Duke could theoretically have been reconstructed, but her long use as a demilitarized training ship made a useful return prohibitively difficult. If an older capital ship had to be retained, Tiger offered a better hull for modernization and could plausibly receive heavier guns for commerce-raider hunting. Converting Iron Duke into a carrier would demand so much work that a purpose-built carrier would probably be easier and better. Her surviving value lay in training and static support rather than economical restoration to the front line.