Political capital spent without winning office

Would Beresford have retained enough political capital to govern effectively after becoming First Sea Lord?

The premise never materialized: he expended his influence attacking Fisher and helped unseat him, but another admiral received the office.

Beresford spent political influence trying to remove Fisher. He helped unseat him but did not secure the First Sea Lordship for himself. The question of how much influence he would have retained in office therefore remains hypothetical.